Engels Air Force Base (Russian: Энгельс, formally Engels-2) is a strategic bomber military airbase in Russia located 14 kilometres (8.7 mi) east of Saratov. Engels is a major bomber operations base, and is Russia's sole operating location for the Tupolev Tu-160 strategic bomber. The base has a 3,500-metre (11,500 ft) runway and about 10 large revetments. It is named after the nearby city of Engels, which is named after the Communist philosopher, Friedrich Engels. Aircraft from the 121st attacked Ukraine during the 2022 Russian invasion of Ukraine.