Snowden, who is accused of espionage and leaking classified US documents, initially fled to Hong Kong. He is now stranded at the Moscow airport and planning to go to a third country possibly Ecuador where he has sought asylum.
The Obama Administration insists that Snowden should be deported to the United States immediately.
"We still believe that he is at the airport in Russia. We noted the statements by (the Russian) President (Vladimir) Putin and the (Russian) Foreign Minister. We certainly understand the fact that Snowden chose to travel to Moscow, chose to travel to Russia creates issues that the Russian government has to consider," White House Press Secretary Jay Carney told reporters travelling with the US President to Africa.
"I would note that we are asking the Russians to expel Snowden, and that we believe there is a clear, legal basis to do so, based on his travel documents and the indictment against him," Carney said.
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The United States is having conversations with Russian government officials on return of Snowden.
"There was no reason for Hong Kong not to detain Snowden. All the procedures were followed. And certainly, as I said the other day, we certainly don't accept the proposition that China - that this was just a technical issue, that China could not have had an effect on," he said.