The agents were deported from the US earlier this month in the biggest spy scandal since the Cold War.
"We talked about life," Mr Putin said. "We sang What Motherland Begins With and other songs of that character."
The song is widely known as an unofficial anthem of Russian intelligence officers.
Bottle boat sails Pacific
A boat made out of 12,500 recycled plastic bottles docked in Sydney Harbour today after four difficult months crossing the Pacific Ocean on a journey meant to raise awareness about the perils of plastic waste.
The crew of the Plastiki, a 60ft catamaran which weathered fierce storms during its 8,000 nautical miles at sea, left San Francisco on March 20, stopping at various South Pacific island nations including Kiribati and Samoa along the way.
A crowd of about 100 greeted the boat.
Suicide bomb blasts TV office
A suicide car bomber wounded at least five people in an attack that appeared to target the office of Dubai-based Al Arabiya television in Baghdad.
The blast took place in Baghdad's western district of Harithiya, the source said.
Arabiya TV said their reporters were not at the office at the time of the attack.
Iraq is on alert for attacks after a March 7 national election produced no clear winner and left the country in political uncertainty.