The U.S. government and Iran-backed Houthi rebels in Yemen both vow escalation after wave of U.S. airstrikes

At least 53 people were killed at the start of a campaign expected to last many days.

The U.S. government and Iran-backed Houthi rebels in Yemen both vow escalation after wave of U.S. airstrikes
At least 53 people were killed at the start of a campaign expected to last many days.