When the priestly leaders of the Parsis, fleeing Persia for India after the Arab conquest of the 8th century, came before local ruler Jadhav Rana asking for sanctuary, Rana asked for a bowl of milk. The bowl was filled to the brim.  How could his kingdom accommodate more, asked Rana, without the bowl spilling over? The priestly leaders, the legend goes, slipped sugar in the milk, masterfully suggesting that the Parsis would dissolve into the existing population, sweetening their lives in the process.

As through history, we are once again faced with a situation where millions have left their homes, ravaged by violence and conflict, seeking sanctuary in foreign lands. And once again, the leaders of the promised lands worry about spilt milk.

Ever since labor economist David Card showed that the 1980 Mariel boatlift, which brought Cuban refugees to Miami, had no effect on local wages and employment, the academic wars have raged (for instance, see summaries and rebuttals here and here). People argue that labor demand curves always slope down—a shift in the supply of workers must decrease wages. Therefore, results that show otherwise are incorrect.

To resolve the debate, I find it useful to think of the ideal experiment. Refugees would come to a country and locate in communities chosen at random, so that there is no correlation between the economic characteristics of the community and its refugee population. Data would track the labor market outcomes of each and every “native,” regardless of where they moved. We could then compare the wages of the natives (wherever they are) who lived in communities that received refugees versus those who did not, yielding the causal impact of refugee populations on labor market outcomes of the natives.

For obvious reasons, this is hard to do. Leading researchers instead focus on “natural experiments” and “area-wide” estimates on the impact of refugees. That is, they examine what happens to wages in the communities where refugees settle using a clever way of teasing out the “natural randomness” in settlement patterns. But if the locals move or if the refugee population itself is badly measured, this could lead to a bias towards finding no results. In essence, the results are for the natives who chose to remain behind and therefore presumably had better job options to begin with. In addition, mismeasurement of the refugee population drives results towards zero—the iron law of econometrics.

But a recently published study from Denmark by economists Mette Foged and Giovanni Peri solves all these problems at once:

• They have data on each and every Danish worker between 1991 and 2008, so that they can track people wherever they go.
• The refugees came in two waves. In the first wave, they waited in a queue and as communities opened up spaces, they were allocated in groups from the same country. Since the department managing the transfers had no data on the skills of these refugees, this was like a random allocation. Later, between 1995 and 2003, the refugee flow from Somalia, Iraq, and Afghanistan increased—but they settled in the same communities that their fellow countrymen had gone to. This created large differences in refugee populations across communities that only grew over time. The authors present a number of very convincing tests that the “like-random” assumption truly holds in their data.
• Because they have fairly long-term data, they can assess both the immediate effects and the cumulative effects over time.

And the results?

Zip. Nada. Nothing. Kuch bhi nahin. No smoking gun showing that natives will be hurt when refugees enter.

More specifically, the authors generally find positive effects on the employment and wages of the natives who looked similar to the mostly unskilled refugees entering at this time. Quantitatively, they find that “a 1 percentage point increase in the share of low-skilled immigrants from refugee-sending countries increased wages for low-skilled native workers by 1 to 1.8 percent.” Nor do they find negative effects on employment—the fraction of the year that natives worked either remained the same or increased slightly, depending on the specification.

To interpret their findings, the authors say:

“The panel regressions suggest that refugee-country immigrants, who specialized mainly in manual, low-skilled jobs, encouraged low-skilled natives to take more complex occupations, decreasing the manual content of their jobs, especially when changing establishment and this contributed to produce a positive effect on their wages and employment. In no specification do we find crowding-out of native unskilled workers or depressing effects on their wages”.

Could it be that this was just because the refugees did not work? Nope. Over the time period of the data, the foreign-born share of employment in Denmark rose sharply, from 3 percent to just over 6 percent.

Could it be that the refugees were “like the Danes” and therefore fitted in better? Unlikely. Their estimates are driven by a surge in immigrants from Somalia, Afghanistan, and Iraq between 1995 and 2003. Hard to mistake them for Danes.

But the earlier “area” estimates were wrong, right? Nope. Actually it turns out that all the legwork Foged and Peri do pretty much replicates the simpler area estimates that have been saying this all along.

To be sure, more could be said. For instance, the paper could talk about the precise government policies that were put in place to help the refugees when they came and the associated costs. In fact, it would be good to show the per refugee cost to the government and compare this to the taxes that the refugees paid back to the system as they joined the labor force. Since there are no “spillovers” to natives, if the taxes are higher than the initial public costs, refugees are a net gain to the treasury. Bringing them in would actually increase government budgets over time, without hurting native wages. Of course, the wages and lives of the refugees will be immeasurably better, but we have known that for a while now.

When it comes to taking in refugees, there shouldn’t be worry about the effects on wages or employment of natives. On the contrary, refugees sweeten the deal, as the Parsi priests pointed out thirteen centuries ago.

The flight of humans from Syria has been rapid, massive and dynamic. The number of refugees has grown from 26,000 in the first year of the war to almost 4.2 million now, four years later. It is time for bold action from the world to support Turkey and the other countries of the region hosting the vast majority of refugees.

None of Syria’s neighbors – the primary hosts of refugees – expected the displacement to reach such a scale, nor for the crisis to last this long. Many believed in the early days of the Arab Spring that the oppressive regime of Bashar al-Assad would be replaced by a reformist-minded, popularly-elected government - mirroring the transition that had just taken place in Tunisia and Egypt. Instead, Syria became mired in a civil war between an ever-growing number of opposition groups and the regime, whose repression of civilians, regardless of any involvement in the crisis, has forced millions to flee in terror on either side of the country’s borders.

Until recently, the overwhelming majority of the refugees were fleeing the indiscriminate attacks of the Syrian government. More recently, ISIS has been a significant source of terror, while even more recently Russia’s entry into the conflict has triggered another wave of flight.

Today, the refugee populations registered in Lebanon, Jordan and Turkey total more than 4 million souls. Managing the presence of such large numbers of refugees has been costly on host countries economically, socially and politically. What was expected to be a temporary refugee influx has become a protracted crisis. With no signs of a resolution of the conflict in the foreseeable future, the refugees’ hope to return is diminishing.

The massive influx of refugees into Europe, often via extremely costly and life-threatening channels, reflects the despair and harsh living conditions that many refugees feel. Syrians constitute the majority of the 800,000 migrants that have crossed into Europe this year. As the crisis spills beyond Syria’s immediate neighbors, the EU is experiencing major challenges in managing a response. It is clear that attending to refugees is not only a concern of the immediate neighborhood – but that of a much wider region.

In looking at the challenges to Europe, it is important to underscore that neighboring countries have shouldered most of the burden of caring for the refugees, with inadequate assistance from the international community. Resettlement has been extremely limited, and roughly only a third of the pledges to U.N. response plans have been met.

Now is the time to adopt a comprehensive approach that will offer a better future for refugees and their hosts. Attention must be paid to two areas in particular: Education and access to employment. In this regard, it will be critical to move beyond a strategy focused on humanitarian relief to one explicitly structured around sustainable development and empowerment of refugees.

We need a globally-funded Recovery Program for the Middle East that brings about immediate action to mitigate the impact of the crisis on the economies and services of Syria’s neighbors. As part of that, we need to recognize the skills and income that refugees could contribute to the Turkish economy, if they were only allowed to do so. This program could not be carried out by the Turks alone, but would need the engagement of a range of actors – from the U.N. to the World Bank to the private sector and other donors.

Turkey and its neighbors have generously cared for more than 4 million refugees: But as the displacement crisis enters its fifth year, this burden needs to be shared out much more fairly and effectively.

Sadly, despite the desperate need for peace in Syria, we need to respond to the reality that Syrian refugees will not be able to return home for a while yet. As simultaneously the host of the world’s largest Syrian refugee population as well as host to the G-20 Summit, Turkey is in an ideal position to bring this reality to the attention of G-20 member-states – and leverage more resources to assist it and its neighbors to cope with the crisis.

G-20 leaders must commit to sharing Turkey’s burden and place increased emphasis on empowering refugees to shape their own destinies and become productive members of their host societies.

And it must be remembered: The majority of Syrians want to go home. Eventually they want to be able to contribute to rebuilding a stable and democratic nation for themselves and their families. But peace cannot be served while al-Assad drops barrel bombs on his people and ISIS beheads journalists on the steps of Palmyra. Our leaders must focus on a sustainable political solution to this conflict as the end goal of any plan for the region.

This piece was originally published by Hurriyet Daily News.

The tragic and deadly attacks in Paris, the day before leaders were set to arrive in Antalya, Turkey, for the G-20 summit, underlined the divisions that Syria, its fleeing population, and the terrorists of ISIS have created, as fear and short-term political calculations seem to shove aside policies aimed at sustainable solutions to the unprecedented refugee challenge.

It had started on a more hopeful note. Turkey, which chairs the G-20 this year, had placed the refugee issue on the agenda, hoping for a substantive global dialogue while looking for broad-based solutions to the crisis in Syria and the terrorism challenge. No doubt the 2 million refugees in Turkey played a big role, as President Erdogan and other officials tried to rally support for this unusual situation in a variety of G-20 and other venues.

Turkey was supported by another full member of the G-20, the EU, the only non-nation state member of the group, which shrugged off its complacency when hundreds of thousands turned up on its shores in 2015. European Council President Donald Tusk and Jean-Claude Juncker, European Commission president, echoed the Turkish President in calling for a global response: “Meeting in Turkey in the midst of a refugee crisis in Syria and elsewhere, the G-20 must rise to the challenge and lead a coordinated and innovative response… recognizing its global nature and economic consequences and promote greater international solidarity in protecting refugees.”

The G-20 is an imposing group, consisting of the world’s 20 largest economies, accounting for 85 percent of its GDP, 76 percent of its trade, and two-thirds of its population. Established in 1999 and growing in reach since the 2008 financial crisis, it should be a body that carries weight beyond the economic, with effective mechanisms to have impact on the global agenda. Yet, while Syria and the refugee crisis was the first time the G-20 stepped outside its usual narrower economic mandate, the agenda was quickly overtaken.     

The tragedy in Paris highlighted deep divisions over the refugees. Poland’s new government was the first to announce that it would stop participating in the EU resettlement plan whereby it would have accepted 5,000 refugees. Politicians from Hungary, the Czech Republic, Slovakia as well as those with a nativist message from the Nordic countries, France, Germany, and others saw an opening for tighter border controls and a much less welcoming approach to the more than 800,000 refugees that have already made their way into Europe, not to mention the many more on the way. Such views linking refugees to terrorism are not restricted to Europe but can be seen on the other side of the Atlantic, as U.S. presidential candidates and some 27 State Governors declared that Syrian refugees were not welcome.

At this early date, except for a single Syria passport “holder”—a document easily acquired these days, and found near one of the suicide bombing sites in Paris—all those who died or are being sought as suspects are citizens of either France or Belgium. Clearly, there could be some who get into Europe by using the refugees as a cover but with literally thousands of Europeans fighting in Syria, the real threat emanates from the small number of home-grown extremists in Europe who have easy access to the West and a cultural and linguistic familiarity that will elude newcomers for years. This was the same scenario one saw in the Madrid, London, Copenhagen, and the Charlie Hebdo attacks in Paris earlier this year. 

Fear is winning out over policy

The EU also appears in disarray on aiding the 4 million refugees in Jordan, Lebanon, and Turkey. This is significant since it is reduced funding and aid that is leading to the worsening of conditions in Jordan, Lebanon, and Syria, and driving many to Europe. Turkey too is reaching its limits and may potentially face a million or more new refugees if Aleppo falls. Yet funds pledged to these countries remain largely unfulfilled—of the 2.3 billion euros pledged by EU governments, only 486 million are firm government offers. The discussions between the EU and Turkey for additional aid to refugees of 3 billion euros also remain less-than-certain since such aid requires that EU countries agree to receiving and distributing asylum-seekers from Turkey. It also underlines the lack of funding for Jordan and Lebanon.    

In the end, the G-20 yielded little by way of concrete actions on refugees, though additional border controls, enhanced airport security, and intelligence sharing were promised. There was a call for broader burden sharing and greater funding of humanitarian efforts, as well as a search for political solutions. The G-20 also added little to the broad outlines of a potential settlement on Syria discussed in Vienna, Austria, on November 14, 2015, a day before the start of the G-20 summit.

Unfortunately, these are the very things that separate G-20 members among and within themselves. The growing danger is that fear and political opportunism rather than well-thought-out polices will guide the global response to the greatest human displacement tragedy since World War II. It is precisely this fearful and exclusive reaction that ISIS seeks. Indeed, that legacy may live long after ISIS is gone.