Updated

A Houthi strike on the airport in Riyadh, Saudi Arabia's capital, killed at least 12 people and injured more than 300 others. The Saudi-led coalition called it a 'war crime,' and world leaders including US President Donald Trump condemned the attack, with Trump saying the US 'may' join Saudi strikes against the Houthis and that Washington was evaluating further action, including a call with Saudi Crown Prince Mohammed bin Salman. The attack marks a sharp escalation in the Yemen conflict and raises fears of a wider regional war involving Iran-aligned forces. The strike came amid intensifying fighting inside Yemen: Saudi-backed Yemeni government forces claimed to have killed 1,150 Houthi fighters in 24 hours of operations, while in Taiz, hospitals are nearing collapse under a tightening Houthi siege that has cut off fuel, medicine and medical supplies. Together, these developments point to a rapidly deteriorating humanitarian and military situation in Yemen with growing international involvement.