An Iranian general vowed to respond "decisively and destructively" to threats after Trump said he ordered U.S. forces to launch strikes against Houthis in Yemen.

President Trump declared Monday that he would consider every shot fired from the Houthis to be an attack from Iran and threatened to hold the regime in Tehran responsible.

"Any act of aggression will have severe consequences, for which the U.S. will bear full responsibility," Iranian Permanent Representative to the United Nations Amir Saeid Iravani wrote in a letter to U.