The Pentagon has agreed to provide aerial refueling support for Saudi and allied pilots attacking Houthi rebels in Yemen, an expansion of the U.S. military’s role in the conflict, a Defense Department official said Thursday.

The official spoke anonymously because of the sensitivity of the information.

The U.S. tanker aircraft would not enter Yemen’s airspace. No missions have been flown yet and it was not clear if the Saudis had requested any. […]