The Saudi-led coalition that's fighting against Shiite rebels in Yemen said it completed a blockade of the country's ports and is ready to step up airstrikes.
Bombing missions are seeking to stop the Shiite Houthis from moving forces between Yemen's cities, Ahmed Asseri, a Saudi military officer, told reporters in Riyadh on Monday. Coalition aircraft and warships targeted the rebels as they advanced toward Aden, the southern port that's the last stronghold of Saudi Arabia's ally in Yemen, President Abdurabuh Mansur Hadi. Shipping routes to and from the ports are under the coalition's control, Asseri said.
The conflict in Yemen has escalated the regional rivalry between Saudi Arabia and Iran, which has ties to the rebels. It has further destabilized a region that holds more than half the world's oil and is already wracked by wars in Syria and Iraq.