title: Vice President Biden, Turkey's Erdogan discuss fight against Islamic State
text: WASHINGTON (Reuters) - The White House said Vice President Joe Biden and Turkish President Tayyip Erdogan discussed ways to deepen cooperation in the fight against Islamic State in a meeting on Saturday in Istanbul. Biden and Erdogan also talked about the “importance of de-escalating recent tensions between Turkey and Iraq in a manner that respects Iraqi sovereignty,” the White House said in a statement released on Sunday.       