Seversk (Russian: Се́верск) is a closed city in Tomsk Oblast, Russia, located 15 kilometers (9.3 mi) northwest of Tomsk on the right bank of the Tom River. Population: 108,466 (2010 Census preliminary results); 109,106 (2002 Census);

Founded in 1949, it was known as Pyaty Pochtovy (Пя́тый Почто́вый) until 1954 and as Tomsk-7 (Томск-7) until 1992.^{[citation needed]} Town status was granted to it in 1956.^{[citation needed]}

Administratively, along with five rural localities, it is incorporated as Seversk City Under Oblast Jurisdiction—an administrative unit with the status equal to that of the districts.Municipally, Seversk City Under Oblast Jurisdiction is incorporated as Seversk Urban Okrug.

Seversk is the site of the Siberian Group of Chemical Enterprises, founded in 1954. It comprises several nuclear reactors and chemical plants for separation, enrichment, and reprocessing of uranium and plutonium. Following an agreement in March 2003 between Russia and the United States to shut down Russia's three remaining plutonium-producing reactors, two of the three plutonium producing reactors (the two that are sited at Seversk) have now been shut down.

Tomsk (Russian: Томск) is a city and the administrative center of Tomsk Oblast, Russia, located on the Tom River. One of the oldest towns in Siberia, Tomsk celebrated its 400th anniversary in 2004. Population: 522,940 (2010 Census preliminary results); 487,838 (2002 Census); 501,963 (1989 Census).

It is served by the Bogashevo Airport.

Tomsk is located about 20 kilometers (12 mi) southeast of the town of Seversk, a major center of plutonium production, reprocessing and uranium enrichment.

Tomsk was established under a decree from Tsar Boris Godunov in 1604 after Toyan, the Tatar duke of Eushta, asked for the Tsar's protection against Kirghiz robbers.^{[citation needed]} The Tsar sent 200 Cossacks under the command of Vasily Tyrkov and Gavriil Pisemsky to construct a fortress on the bank of the Tom River overlooking what would become the city of Tomsk. Toyan ceded the land for the fortress to the Tsar.

In 1804, the government selected Tomsk to become the seat of the new Tomsk Governorate, which would include the modern cities of Novosibirsk, Kemerovo, and Krasnoyarsk, as well as the territories which are now in eastern Kazakhstan. The new status brought development and the city grew quickly.

Thomas Leo "Tom" Clancy, Jr. (born April 12, 1947) is an American author, best known for his technically detailed espionage, military science, and techno thriller storylines set during and in the aftermath of the Cold War, along with video games on which he did not work, but which bear his name for licensing and promotional purposes. His name is also a brand for similar movie scripts written by ghost writers and many series of non-fiction books on military subjects and merged biographies of key leaders. He is Vice Chairman of Community Activities and Public Affairs, as well as a part-owner, of the MLB Baltimore Orioles.

Clancy was born in Baltimore, Maryland. He attended Loyola Blakefield in Towson, Maryland, graduating with the class of 1965. He then attended Loyola College in Baltimore, graduating in 1969. Before making his literary debut, he spent some time running an independent insurance agency. This agency thrived for a few years before joining a group of investors.

Clancy and his first wife Wanda married in 1969, separated briefly in 1995, and permanently separated in December 1996. Clancy filed for divorce in November 1997, which became final in January 1999.