U.S., Russia ready to set new nuclear arms limits- CNN

OSCOW, Russia (CNN) -- President Obama arrived in Moscow on Monday to meet with Russian President Dmitry Medvedev in an effort to "reset" the countries' relations.

President Obama prepares to lay a wreath at the Tomb of the Unknown Soldier in Moscow on Monday.

The leaders will announce a new arms-control agreement at their joint press conference, a source close to the American side told CNN.

The agreement will limit the number of nuclear warheads each side can deploy and the number of missiles they have have to launch them.

The deal -- which will not be legally binding -- will replace the START I agreement, which is nearly two decades old and expires December 5.

Medvedev said a new nuclear arms treaty was the top issue on the agenda. He was speaking in an interview with Italian media RAI and Corriere della Sera.

He said before the two-day summit that relations "have begun to revive" after a period of significant deterioration during the administration of former U.S. President George W. Bush.

Russia has for years linked nuclear-arms reductions to the proposed U.S. missile defense system, which would have elements in Poland and the Czech Republic.

Medvedev opposes the missile defense shield. The Bush administration first raised the idea; the Obama administration is reviewing the plan and has not decided whether to proceed.