Europe is trying to deal with what is being called its biggest wave of migrants since World War Two. On Tuesday, German Chancellor Angela Merkel called on European countries to quickly develop a joint asylum policy. She said such a policy should include setting up migrant registration centers at important transit points.

The 28-member EU plans to hold emergency talks on the migrant issue on September 14. Also, the International Organization for Migration said Tuesday that more than 350,000 migrants have crossed the Mediterranean Sea into Europe. The intergovernmental agency said that most have entered Greece. Others have arrived in Italy while smaller numbers have gone to Spain and Malta. About 2,600 migrants have died, most from drowning at sea.

In Hungary, officials shut down, and then reopened Budapest's main train station. The move left hundreds of migrants waiting outside the station. Most come from conflict areas of the Middle East. They were seeking to board trains to Austria and Germany. Hungary is one of the main migrant entry points to the European Union.