Top diplomats from the United States and Turkey are meeting to discuss what Ankara is willing to contribute to a growing worldwide coalition to defeat the Islamic State militant group.

The talks Friday between Secretary of State John Kerry and Turkish Foreign Minister Mevlut Cavusoglu came a day after Ankara refused to embrace plans by the U.S. and Mideast nations to defeat the Sunni militant group.

The U.S. wants Turkey to tighten its borders against fighters and funding that has been flowing to the militants in Iraq and Syria.

But the State Department believes Turkey has not publicly endorsed the plans out of concern for 49 of its citizens who are being held hostage by the Islamic State.

Cavusoglu cited challenges and distresses that the extremists pose to the world.