House Speaker Paul Ryan (R-Wisc.) said Tuesday the U.S. cannot "ignore the threat" posed by radical Islam, hours after President Obama rebuked Republicans for trying to insist he use the term to describe terrorists.

"We are at war with radical Islamic terrorism," Ryan told reporters. "And, yes, there is a very important distinction that needs to be made from the millions of moderate Muslims, who are our allies, our brothers, our sisters, who are helping us in this fight. But that does not mean we should ignore the threat that is facing us. We need to call this threat for what it is if we're going to fully confront it."

Then, Ryan abruptly cut off questions about the Islamic State in Iraq and Syria (ISIS).

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