Russia's President has offered up new comments about the plight of NSA whistleblower Edward Snowden.

Snowden is unable to leave the transit zone of Moscow's main airport, as the US government has revoked his passport.

Vladimir Putin says Snowden's presence in Russia is actually the fault of the US government.

"He arrived on our territory without an invitation - we didn't invite him. And he was not flying to us - he was flying in transit to other countries. But as soon as he got in the air it became known, and our American partners, actually, blocked his further flight. They themselves scared other countries."

Snowden is accused of leaking classified documents to the media connected to U.S. surveillance programmes.

He has been offered asylum in a number of Latin American countries, but has no documents to allow him to leave Moscow since arriving there from Hong Kong last month.