The United States plans to designate Yemen's Houthi movement as a foreign terrorist organization, three sources familiar with the matter said, a move that diplomats and aid groups worry could complicate efforts to combat the world's largest humanitarian crisis.
The decision to blacklist the Iran-aligned group, which could be announced as soon as Monday according to two of the sources, would also threaten to derail UN-led peace talks as the administration of President-elect Joe Biden prepares to take over from the Trump administration on Jan. 20.