" Until we see visible change on the ground in Tibet and some real give-and-take on the part of the Chinese government , we can be confident that the resumption of the dialogue is nothing more than a delaying tactic designed to mute international criticism , especially in the lead up to the expected meeting between Obama and the Dalai Lama , " said Tenzin Dorjee , executive director of Students for a Free Tibet , a group based in New York that advocates for Tibetan independence .