Barack Obama’s foreign policy to-do list is long and daunting. One of his great challenges is Iraq, specifically handling US troop withdrawal as a lesser-known displacement crisis rages on. Since the war began in 2003, some five million Iraqis have been displaced internally or become refugees, ending up mostly in Syria and Jordan. The displacement crisis in Iraq affects nearly one-fifth of the Iraqi population, and its scope has implications for regional security in the Middle East. Read more here