WASHINGTON - Saudi Arabia consulted with the United States at 'high levels' before launching air strikes against Houthi fighters in Yemen, and President Barack Obama was aware of the plan, a US official said on Wednesday. The Obama administration gave its support to the military campaign, the official said, speaking on condition of anonymity. Saudi Ambassador Adel al-Jubeir told reporters earlier that Riyadh had been in touch with Washington about the operation now under way, but that the United States was not a member of the 10-country coalition.