TEHRAN, April 16 (Xinhua) -- Iranian Foreign Ministry on Monday blamed the "strategic mistakes" of the U.S. policies for the crisis in the volatile Middle East.

"The strategic mistakes made by the U.S. are the cause of region's abnormal situation," Foreign Ministry spokesman Bahram Qasemi said at the weekly press conference.

The U.S.-led invasions in the Middle East are not new, as they "seek to dictate their expansion policies" in the region with occasional military actions under "false" pretexts, Qasemi said.

He also denounced the recent airstrikes on Syria by the U.S., Britain and France as "contrary to all international norms."

The U.S. and its allies, Britain and France, attacked Syrian military facilities on Saturday morning under the pretext of deterring Syria from using chemical weapons.