AECOB, approved in 1950, was a vehicle for foreign intelligence (FI) operations into and within Soviet Latvia and involved infiltration and exfiltration of black agents and the recruitment of legally resident agents in the USSR, especially Latvia. ZRLYNCH was approved in 1950 for use of the Latvian Resistance Movement, which had been formed in 1944, as a vehicle for clandestine activities within the USSR. ZRLYNCH was renewed in 1952 as a part of AECOB, which then provided both FI and political and psychological (PP) activities. AECOB / ZRLYNCH PP project was terminated in 1955. AECOB FI project was terminated in 1959.