President George W. Bush is back in Washington after failing to win Russian support for a U.S. missile defense system in central Europe.

Mr. Bush arrived home Sunday after holding his a summit with Russian President Vladimir Putin at the Black Sea resort of Sochi.

The two leaders signed an agreement that they call a blueprint for their successors. Mr. Bush said it spells out the accomplishments both countries have made in the past seven years.

It does not include Russian backing for U.S. plans to put defensive missiles and radar in Poland and the Czech Republic.

But Mr. Bush said the framework backs the idea of Moscow and Washington cooperating on an anti-missile system.

Mr. Putin said he believes Mr. Bush understands Russia's concerns about the missile system and the Kremlin's opposition to NATO expansion.

Mr. Bush came to Sochi after attending last week's NATO summit in Bucharest. He failed failed to convince NATO leaders to open the membership process at this time to Georgia and Ukraine - two former Soviet states. But he did win NATO support for the missile system.

Moscow considers U.S plans for deploying a missile defense system in Poland and the Czech Republic a threat to Russian security. The United States says it is aimed at protecting Europe from an attack by such so-called rogue states as Iran.

Mr. Bush also met in Sochi with Russian President-elect Dmitri Medvedev, calling their talks extremely positive

Earlier, Mr. Medvedev called Russian-American ties a key factor in world security, and he said the efforts should continue. The Russian president-elect takes office May 7.

Some information for this report was provided by AFP and AP.