US president Obama met with Russian Prime Minister Putin for______.

US President Barack Obama is urging Russians to work with the United States to tackle the big security and economic problems of our time. In a speech to graduates of an economic school，Mr. Obama made the case for better relations.
    The president began his day in Moscow while wrapping up talks with Russian leaders. He met for the first time with Russian Prime Minister and former President Vladimir Putin who many analysts consider the most powerful man in the country.(7)Their words were cordial. Their tone was polite. They said: "We may not end up agreeing on everything, but I think that we can have a tone of mutual respect and consultation that will serve both the American people and the Russian people well."(8)
    A few hours later, the president shifted focus and took his case for better relations directly to the Russian people. The venue was a graduation ceremony for the New Economic School, which was established in Moscow after the fall of the Soviet Union by Americans and Russians eager to provide training in free market theory.