Klintsevich was born on 15 June 1957 in the village of Kreyvantsy [be], Ashmyany district, Molodechno Region, in what was then the Byelorussian Soviet Socialist Republic, in the Soviet Union.[2] Between 1974 and 1975 he worked as a teacher of drawing, labour and physical education at a rural 8-year school in his home village.[3] In 1975 he joined the Soviet Armed Forces, where he would serve until 1997, rising through various ranks and positions with the Soviet Airborne Forces, and their successor, the Russian Airborne Forces, following the dissolution of the Soviet Union in 1991.[3]
Klintsevich studied at the Sverdlovsk Higher Military-Political Tank-Artillery School [ru], graduating in 1980.[2] In 1986 he graduated from the courses of officers and political workers of the Soviet Ministry of Defence. Between 1986 and 1988 he served in the 345th Independent Guards Airborne Regiment of the 40th Army during the Soviet-Afghan War. He reached the rank of colonel in the reserve.[3] In 1991 Klintsevich graduated from the Lenin Military-Political Academy, and between 1990 and 1995 was Deputy Chairman of the Union of Veterans of Afghanistan.[2][3]
In 1992 Klintsevich participated in the creation of the People's Patriotic Party (NPP), was elected a member of the executive committee of the NCE, and was later chairman of the party. In 1995, Klintsevich stood for election to the State Duma's second convocation, as a member of the party list of the electoral bloc Za Rodinu! [ru], which did not overcome the 5% barrier to secure representation in the Duma.[3] In 1995 he was elected a member of the Council of the All-Russian Public Movement "Reforms - New Course". In 1999 Klintsevich and his People's Patriotic Party joined with the Unity electoral alliance and Klintsevich was elected to the Duma's third convocation. In 2000 he was elected chairman of Unity's Moscow organization, and in 2001, at the congress when Unity was established as the United Russia political party, Klintsevich was elected a member of the party's General Council.[3]
Klintsevich attended the Military Academy of the General Staff of the Armed Forces of Russia, graduating in 2004 as a candidate of Psychological Sciences, having been re-elected to the Duma's fourth convocation the previous year, and in December 2007 he was elected to the Duma's fifth convocation. In 2008 he was Chairman of the Central Coordinating Council of party supporters, and head of the Chechen branch of United Russia.[3] On 4 December 2011 he was elected to the sixth convocation, and was United Russia's first deputy head in the Duma.[3]
On 29 September 2015 Klintsevich became a member of the Federation Council for Smolensk Oblast, holding the position until 18 September 2020.[2] During his tenure he was first deputy chairman of the council's Committee for Defence and Security.[3]
