President Trump said on Wednesday that the Iran-backed Houthi militant group in Yemen would be “completely annihilated” by U.S. military strikes and warned Tehran to “immediately” stop supplying it with military equipment and general support and “let the Houthis fight it out themselves.”

U.S. President Donald Trump has threatened Yemen’s Houthi rebels that they’ll be “completely annihilated” as American airstrikes pounded locations under their control, while further pressuring the group’s main benefactor Iran.

Houthi rebels have resumed their attacks on Israel, after the US targeted rebel strongholds in Yemen. The renewed conflict comes amid a deteriorating humanitarian crisis, made worse by sanctions and US foreign aid cuts.