TURKEY-US-POLITICS-DIPLOMACY

US Vice President Joe Biden (L) gestures next to Turkish President Recep Tayyip Erdogan after a meeting at Yildiz Mabeyn Palace on January 23, 2016 in Istanbul. / AFP / POOL / SEDAT SUNA (Photo credit should read SEDAT SUNA/AFP via Getty Images)

US Vice President Joe Biden (L) gestures next to Turkish President Recep Tayyip Erdogan after a meeting at Yildiz Mabeyn Palace on January 23, 2016 in Istanbul. / AFP / POOL / SEDAT SUNA (Photo credit should read SEDAT SUNA/AFP via Getty Images)