Two men who served as top foreign policy advisers to former President Barack Obama are speaking out against their former boss, who they say made the world a “more dangerous” place.

Barry Pavel, who sat on Obama’s national security council from 2008 to 2010 as senior director for defense policy and strategy, told Fox News recently that Obama’s inaction in Syria was a “major mistake.”

“In Syria, a major mistake was treating it like a humanitarian crisis, when it was a major national security crisis that has caused destabilization of our closest allies in Europe,” Pavel said. “Syria has been a source of terrorist attacks in Europe and the United States, and future attacks. I worry about that very much.”

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