Dmitry Medvedev said the European missile defense shield remained a key problem in the Russian-U.S. relations.

The FBI found bomb-making materials in the 22-year-old's Lubbock, Texas home just before his February 2011 arrest.

The debate has quickly shifted to the combination of expiring tax breaks and new spending reductions known as the "fiscal cliff."

The new group is lobbying the international community for more powerful weapons to break the stalemate with the regime.