He represented the Soviet Union on the United Nations Committee on the Peaceful Uses of Outer Space (COPUOS).
He worked closely with Hugh Dryden, his American counterpart, to promote international cooperation on space projects at the height of the Cold War.
Their talks in 1962 led to the Dryden-Blagonravov agreement, which was formalized in October of that year, the same time the two countries were in the midst of the Cuban Missile Crisis.
[2] Unfortunately, as the competition between the two nation's manned space programs heated up, efforts to further cooperation at that point came to an end.
In April 1970, he held informal talks in New York City with NASA Administrator Thomas O. Paine, about the possibility of performing a rendezvous and docking of a US and Soviet spacecraft.