August 24. 1956 (diplomatic): Victor I. Petrov. a translator in the languages section on the U.N. Secretariat. was discharged from the United Nations after the U.S. delegation issued a statement saying that Petrov had sought to get "information vital to the security and defense of the United States." August 29. 1956 (diplomatic): Rostislav Shapovalov. second secretary of the Soviet Mission to the U.N.. was requested to leave the United States after it was discovered that he exerted pressure on a Russian refugee in the United States to become a Soviet agent. September 5. 1956 (diplomatic): Sweden expelled Peter Mirosnikov for receiving secret data from Anatole Ericson and sent a formal protest to Moscow about Its spy activities in that country. October 5. 1956: Anatole Ericson. a radar instrument maker. was convicted to giving military secrets to Russia by a Swedish court and sentenced to 12 years at hard labor.