Mr Obama and Mr Medvedev met during a nuclear summit in the South Korean capital Seoul.
As Russian president Medvedev made a first visit to the island in November 2010.
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If he becomes prime minister it is hard to imagine him answering to Mr Medvedev.
President Dmitry Medvedev ordered a thorough investigation to solve the crime, but few Russians expect much.
Speaking to CNN's Matthew Chance, Medvedev said the move was in line with international law.
Since the time the cable was written, Russian President Dmitry Medvedev has dismissed Luzhkov.
But I just want to emphasize that my interactions with President Medvedev have always been excellent.
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"The meeting with Mr. Medvedev is the main event on his program, " the statement said.
This weekend Mr Yanukovich is due to meet Mr Putin and Mr Medvedev in Moscow.
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Whether Prokhorov himself will come out strongly in favor of Medvedev remains to be seen.
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On Wednesday Russia's president, Dmitry Medvedev, said that he is more open to sanctions against Iran.
Meanwhile, Mr. Medvedev's anti-corruption push will soon start working it's way into Russian law.
Medvedev, 46, is the third president of Russia since the fall of the USSR in 1991.
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And today, Russian President Dmitry Medvedev said Russia would punish anyone who attacked them.
True to form, Mr Medvedev's article gives no answers to any of these questions.
However, Nomura Securities analyst Tatiana Orlovo says a Medvedev win is not a done deal.
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Some see Mr Medvedev's new activity as an attempt to pull away from Mr Putin's influence.
Both Mr Putin and Mr Medvedev have talked about tackling graft, but done nothing.
However, Medvedev has already indicated Moscow will not be changing its hard-line rhetoric toward Obama's administration.
Medvedev has been pestered by reporters in Moscow all year about whether he will seek re-election.
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Almost from his arrival at the Kremlin, Mr Medvedev took an active role at Gazprom.
The President travels tomorrow evening to Prague to sign with President Medvedev the next START treaty.
Indeed, there is perceived to be a growing gap between Mr Medvedev's words and reality.
Any idea whether Medvedev would be a tough customer to deal with or easier?
Nothing in Mr Medvedev's behaviour so far suggests that he is capable of such a step.
Medvedev said he blames both the opposition and al-Assad's government for refusing to negotiate.
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So today, President Medvedev and I agreed to expand trade and commerce even further.
They may even help him retake the presidency in 2012 when Mr Medvedev's term expires.
Mr Medvedev quickly blamed the airport's managers and the transport police for security breaches.
Mr Medvedev has invested time and effort in what will be his fifth trilateral meeting.
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