The Latest: Austrian official warns of migrant limits

Turkish coast guard officials say they have recovered the bodies of five more migrants, raising to 27 the death toll in the latest boat sinking accident off the Turkish coast.

A coast guard statement said a search-and-rescue mission, backed by helicopters, was still underway for other migrants reported missing after a boat carrying them to the Greek island of Lesbos went down in the Bay of Edremit on Monday.

Hungary's prime minister says Western European leaders who consider migration a positive issue are to blame for the "very serious terror risks" and for deteriorating everyday security on the continent.

Orban, who hosted Polish Prime Minister Beata Szydlo on Monday, said that the "migrant phenomenon did not break into Europe violently" but that migrants were called into Western Europe "without control, filtering or security screening."

Downing St. says that if the arrangement ended, thousands of migrants living in makeshift camps near the French port of Calais would be free to cross the English Channel.

Merkel, speaking Monday after a meeting with Turkey's prime minister, said that Turkey and Germany will push at the United Nations for everyone to keep to a U.N. resolution passed in December that calls on all sides to halt without delay attacks on the civilian population.

Davutoglu said during a joint news conference with German Chancellor Angela Merkel that the two countries would also carry out "joint efforts" for greater NATO involvement in the refugee issue.

A top government official has reacted angrily to European Union pressure on Turkey to open its doors to tens of thousands of Syrians who have massed at the frontier fleeing a government onslaught.

Numan Kurtulmus, another deputy prime minister, said Sunday that Turkey had reached the end of its capacity to absorb refugees but would continue to accept Syrians escaping the conflict.

Frank-Walter Steinmeier said before talks involving the U.S., Russia and regional powers expected Thursday in Munich that it's important to calm fighting in Syria, enable humanitarian access and so "reopen the door for negotiations between the government and the opposition in Geneva."

A U.N.-led attempt to launch indirect talks between a government delegation and opposition representatives in Geneva was adjourned last week amid bickering.

An Army official told The Associated Press that "preparations are underway to build a second row of barbed wire and metal fencing, five meters behind the existing fence."

According to Greek and European Union officials, the two new camps will have a combined capacity of 3,000 places, to be expanded to 8,000 places later this year.

At the weekend, a group of residents on the island of Kos continued demonstrations against a planned screening center for migrants, with protesters using burning tires to set up roadblocks.

Dozens of Greek riot police have been deployed to a demonstration organized by the extreme right Golden Dawn party against plans to build a new transit camp for refugees and migrants near Athens.