In the wake of the failed Christmas Day airplane bombing and the killing a few days later of seven CIA operatives in Afghanistan, Washington is, as it was after the Sept. 11, 2001, attacks, obsessed with "dots" - and the inability to connect them. "The U.S. government had sufficient information to have uncovered this plot and potentially disrupt the Christmas Day attack, but our intelligence community failed to connect those dots," the president said. But for all the talk, two key dots have yet to be connected: the Northwest Airlines Flight 253 attacker, and the CIA informant who turned assassin.