PLYMOUTH, N.H. — As hundreds of thousands of refugees from Syria, Iraq and other war-torn countries descend upon Europe in search of a safe place to live, Republican presidential hopeful Scott Walker said Sunday the United States must address the “core of the problem” by fighting the Islamic State.

“The reason people are fleeing is because of the problems with the Islamic State and the leadership there,” Walker told reporters on Sunday night during a campaign stop in New Hampshire. “Containment is not enough. We see it’s a threat to us, it’s a threat to Israel, we see it’s increasing a threat to people all around the world.”

Walker said the United States should immediately lift “political restrictions” on the few thousand troops already in Iraq so they can better fight the Islamic State.

Read the article “Scott Walker: To Address Europe’s Refugee Crisis, U.S. Must Fight Islamic State” on washingtonpost.com.