Tehran, March 16 -- Iranian Foreign Ministry Spokesman Esmaeil Baghaei on Sunday strongly condemned the deadly U.S. airstrikes across Yemen on Saturday night.

The airstrikes targeted Houthi sites across Yemen, including the capital Sanna, killing at least 31 people and injuring more than 100, the al-Masirah TV cited the Houthi-run health ministry as saying.

Baghaei said the airstrikes were a "military aggression" that targets "Yemen's resistant people," and were in "flagrant violation" of the principles of the United Nations Charter and international law.

U.S. President Donald Trump said the airstrikes are also sending a message to Iran that its support for the Houthis must end immediately. "Do NOT threaten the American People, their Pr...