U.S. President Donald Trump launched large-scale military strikes against Yemen's Iran-aligned Houthis on Saturday over the group's attacks against Red Sea shipping, killing at least 31 people at the start of a campaign expected to last many days.

The U.S. launched strikes Saturday in Yemen as President Trump said the U.S. would use "overwhelming lethal force" until Houthis cease shipping attacks.

US President Donald Trump said on social media on Saturday that he had ordered the US military to launch strikes against the Houthis, the anti-government forces in Yemen.