The Secretary of State spoke with the Russian Foreign Minister about the US's offer of a prisoner exchange.
This was the first time that Blinken had spoken with the Russian foreign minister.
The Kremlin was urged to accept a substantial proposal in order to bring back the two men, according to a statement from the deputy secretary of state.
The prisoner swap has been reported by various media outlets, but the White House has not confirmed it.
The U.S. made a proposal a week ago to facilitate the release of the two men. Forbes reported in May that there was a potential swap with convicted Russian arms dealer Viktor Bout. The man is facing drug charges in Russia. She could face 10 years in prison if she is found guilty. He was sentenced to 16 years in a Russian prison. Russia did not accept an offer, and information about a possible swap should not be made public, according to the Kremlin's spokesman. Maria Zakharova said talks between the two countries were still going on.
Russia swaps a prisoner for someone else.
A report says that the U.S. offered a Russian convicted arms dealer in exchange for two Americans.
Will the merchant of death be able to free him? A lawyer claims that Moscow wants something. There is a magazine called "Forbes."
There is a possibility of a prisoner swap between Russia and the US.