How to beat Islamic State.

The article looks at military and political conditions in Iraq, focusing on the advance of the militant group Islamic State (ISIS), which it says now controls about a third of the country as well as part of Syria, and presenting a case for the view that the U.S. should take stronger military actions against ISIS. Topics include the Iraq War, Iran's military support for Iraqi Shia militias, the Middle East policy views of U.S. President Barack Obama, and the attitudes of Sunnis in Iraq.