The head of Iran’s Revolutionary Guard threatened the U.S. and its allies Monday as he addressed a pro-government demonstration attended by tens of thousands of people denouncing last week’s violent protests over a fuel price hike.

Heavy fighting has continued despite a cease-fire deal in northern Syria after Turkey vowed to clear Syrian Democratic Forces from a 20-mile-deep “safe zone” between the border cities of Tal Abyad and Ras al-Ayn.

A top general said that America’s addition of 14,000 troops in the Persian Gulf since the spring would probably not deter Iran from carrying out a major strike.