Republican presidential candidate Donald Trump speaks during a rally at JetSmart Aviation Services on Sunday, April 10, 2016, in Rochester, N.Y. (AP Photo/Mike Groll)
CNN  — 

Iraq is collapsing as a country. This week’s bombings in Baghdad, which killed more than 90 people, are just further reminders that the place remains deeply unstable and violent. There is a lesson to be drawn from this, one that many powerful people in Washington are still resisting.

Read the Washington Post column