U.S. President Barack Obama called Turkish President Recep Tayyip Erdoğan on Thursday, at the last day of the UN General Assembly meetings in New York, to discuss the recent situation in the Middle East and the fight against ISIS. According to presidential sources, the leaders reiterated their intention to advance their already strong cooperation in the fight against terrorist organizations in the region and the threat posed by ISIS and agreed to take necessary steps together to stabilize Syria. Obama also praised Turkey's effort of hosting the massive influx of refugees who fled from ISIS, including tens of thousands this week alone and underlined the importance of cooperation to solve the increasing refugee problem in the region. Erdoğan also met with US Vice President Joe Biden on Thursday in New York, over the request by Biden. In the meeting, which lasted for one and a half hours, Biden and Erdoğan agreed to continue to consult closely.