Yemen's Houthi rebels say the U.S. military has launched a series of airstrikes on the capital, Sanaa, and a rebel-held coastal city.

Ras Isa is a critical oil pipeline and port, one of three on the country’s west coast through which the vast majority of imports and humanitarian assistance enter Yemen. Central Command argued the Iran-backed Houthi rebels, which America considers a terrorist group, were using the site as a fuel supply facility and for graft.

DUBAI, United Arab Emirates (AP) — A new American airstrike campaign against Yemen’s Houthi rebels appears more intense and more extensive, as the U.S. moves from solely targeting launch sites to firing at ranking personnel as well as dropping bombs in city neighborhoods, an Associated Press review of the operation shows.