, August 22, 1913 – Dubna

Dubna

Dubna is a town in Moscow Oblast, Russia. It has a status of naukograd , being home to the Joint Institute for Nuclear Research, an international nuclear physics research centre and one of the largest scientific foundations in the country. It is also home to MKB Raduga, a defence aerospace company...

, Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

, September 24, 1993) was an Italian

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

-born nuclear physicist

Nuclear physics

Nuclear physics is the field of physics that studies the building blocks and interactions of atomic nuclei. The most commonly known applications of nuclear physics are nuclear power generation and nuclear weapons technology, but the research has provided application in many fields, including those...

, an early assistant of Enrico Fermi

Enrico Fermi

Enrico Fermi was an Italian-born, naturalized American physicist particularly known for his work on the development of the first nuclear reactor, Chicago Pile-1, and for his contributions to the development of quantum theory, nuclear and particle physics, and statistical mechanics...

 and then the author of numerous studies in high energy physics, especially on neutrinos. According to Oleg Gordievsky

Oleg Gordievsky

Oleg Antonovich Gordievsky , CMG , is a former Colonel of the KGB and KGB Resident-designate and bureau chief in London, who was a secret agent of the British Secret Intelligence Service from 1974 to 1985.-Early career:Oleg Gordievsky attended the Moscow State Institute of International...

 (the highest-ranking KGB

KGB

The KGB was the commonly used acronym for the . It was the national security agency of the Soviet Union from 1954 until 1991, and was the premier internal security, intelligence, and secret police organization during that time.The State Security Agency of the Republic of Belarus currently uses the...

 officer ever to defect) and Pavel Sudoplatov

Pavel Sudoplatov

Lieutenant General Pavel Anatolyevich Sudoplatov was a member of the intelligence services of the Soviet Union who rose to the rank of lieutenant general...

 (former deputy director of Foreign Intelligence for the USSR), Pontecorvo was also a Soviet agent.