Brennan met on Tuesday with Yemen's main opposition, the Joint Meeting Parties, in a bid to revive the GCC-brokered initiative.
Following the meeting, an opposition leader told Arab News that the meeting was fruitless since the Americans didn't present new ideas.
"We had a lunch and talked with each other, and got out of the meeting empty-handed. We insisted on our view on the transfer of power," the opposition leader said. He refused to give more details about the meeting.
The US Embassy in Sanaa issued a briefing on Tuesday about the visit.
"In his meetings, John Brennan reiterated the US position that it is essential for all parties to participate in a peaceful political process in order to address the urgent needs of the Yemeni people for improved social, economic and security conditions, and to immediately implement a transition that serves the aspirations of the Yemeni people."
Separately, local sources in the troubled southern province of Abyan told Arab News that local armed tribesmen joined the army in fighting Al-Qaeda militants in the province.
"The tribesmen acted on their initiative and repelled an attack by Al-Qaeda operatives who wanted to control another city in Abyan," Fadhel Mubarek, a local journalist said.
