Can Obama 'Reset' Relations with Russia?

Barack Obama is in Moscow for a two-day trip, and appears to be on track with his goal of ending the long chill between the US and its former cold war enemy. At a press conference today in Moscow, he and Russian President Dmitry Medvedev both said important steps forward had been made. They’ve agreed to cut nuclear warheads, a major goal for the first meeting between the two new presidents. But what progress can be made on issues such as NATO expansion and a planned missile defense shield? What role is former President, now Prime Minister Vladmir Putin playing behind the scenes?