By ASSOCIATED PRESS
WASHINGTON — Russian President Dmitry Medvedev praised US President Barack Obama Tuesday for his nuclear security summit and improved relations with Russia.Following a week during which Medvedev and Obama signed a major new nuclear arms treaty, Medvedev praised a new atmosphere between Washington and Moscow and said that cooperation was starting to yield results."The environment has been changed, and there have been direct results," he said. "And I must say that I am glad that I was part of that."He also called this week's nuclear security summit hosted by Obama a "complete success."The Russian leader also sought to temper US expectations for biting sanctions against Iran.He said world powers will have to consider sanctions against Iran unless Teheran acts to assure other countries that its nuclear intentions are peaceful.
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