Operation Baikal-79 (Russian: Операция Байкал-79, Operatsiya Baykal-79) was the codename for the Soviet Union's military intervention in Afghanistan, initiated on December 25, 1979. The operation was aimed at taking control over approximately 20 key strongholds in and around Kabul, which included major military headquarters, communication centers and jails. It involved the deployment of approximately 30,000 Soviet troops into Afghanistan. A critical component of Operation Baikal-79 was Operation Storm-333, executed on 27 December 1979. This mission targeted the assassination of Afghan president Hafizullah Amin and the establishment of a Soviet-aligned government under Babrak Karmal. The assault on the Tajbeg Palace, Amin's residence, was carried out by a specialized force comprising KGB operatives and Soviet military personnel. The operation resulted in Amin's death and the installation of Karmal as the new leader.