Update: Bryan Singer is keeping fans enticed (and slightly confused) with all his behind-the-scenes photos. Following the X-Men: Days of Future Past director's tweet of a heated scene in the Oval Office (as you can see below), Singer took fans to the streets of the 1970s, during a Vietnam protest. As usual, the filmmaker offered no context for what's going on in the scene in question. All we can do is wait for the next tweet of a vague yet exciting photo from the set.
Earlier: A "pivotal meeting" occurred today on the set of X-Men: Days of Future Past. Director Bryan Singer tweeted yet another behind-the-scenes photo — this time of a meeting in the Oval Office. The meeting appears to be attended by the President, members of his staff, and some guys from the military. Singer gave no comment as to what this meeting is about, other than that it is, indeeed, "pivotal."
The government usually ends up causing grief for the mutants in the X-Men universe, so this could very well be a meeting about how best to unleash the Sentinels (mutant-killing robots) on the X-Men. And speaking of Sentinels, there's still no official word on who Peter Dinklage will be playing in the film — even though we all know he's going to be Bolivar Trask.