Joe Biden (left), the then US Vice President with Turkish President Recep Tayyip Erdogan at Beylerbeyi Palace on November 22, 2014 in Istanbul. AFP
Joe Biden (left), the then US Vice President with Turkish President Recep Tayyip Erdogan at Beylerbeyi Palace on November 22, 2014 in Istanbul. AFP

What happens when Biden and Erdogan meet next week?