Dhaka, March 16 -- US 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 24 people at the start of a campaign expected to last many days.

Trump also warned Iran, the Houthis' main backer, that it needed to immediately halt support for the group. He said if Iran threatened the United States, "America will hold you fully accountable and, we won't be nice about it!"

The unfolding strikes - which one US official told Reuters might continue for weeks - represent the biggest US military operation in the Middle East since Trump took office in January. It came as the United States ramps up sanctions pressure on Tehran w...