DUBAI (Reuters) - A leader of Yemen’s Houthi movement said on Monday that the Iran-aligned group reserved the right to respond to any U.S. move to blacklist them after the Trump administration announced its intent to designate it as a foreign terrorist organization. “The policy of the Trump administration and its behaviour is terrorist,” Mohammed Ali al-Houthi said in a Twitter post. “We reserve the right to respond to any designation issued by the Trump administration or any administration.”