Time manipulation in defense of the Motherland

2050:
Long after the defeat and discrediting of Russia following the invasion of Ukraine, a member of ultranationalist group seeks to change the past so that Russia will become great upon finding a way to do so.
1960:
The time traveller arrices at Moscow and is immediately apprehended by the KGB. There he was debriefed before being assigned to help Sergei Korolev to achieve victory against the USA.
1961:
* April 12: Soviet cosmonaut Yuri Gagarin becomes the first human to travel to space aboard the Vostok 1 spacecraft.
* May 5: Alan Shepard becomes the first American in space aboard the Freedom 7 spacecraft.
* September 12: President John F. Kennedy gives his famous "Moon Speech," setting the goal for the United States to land a man on the moon before the end of the decade.
1962:
* August 11-15: The Soviet Union successfully launches the Vostok 3 and Vostok 4 spacecraft, which come within five kilometers of each other in orbit.
* October 14: Soviet cosmonauts Andrian Nikolayev and Pavel Popovich launch on the Vostok 5 and Vostok 6 spacecraft, respectively, and orbit the Earth for several days.
1963:
* June 16-19: Valentina Tereshkova becomes the first woman to travel to space aboard the Vostok 6 spacecraft.
* November 22: President Kennedy is assassinated in Dallas, Texas.
1964:
* March 18: The Soviet Union launches the Voskhod 1 spacecraft, which carries three cosmonauts and becomes the first space mission to have more than one person on board.
* October 12: The Soviet Union launches the Voskhod 2 spacecraft, which carries cosmonaut Alexei Leonov on the first-ever spacewalk.
1965:
* March 18: The Soviet Union launches the first human crew to spend a full day in space aboard the Voskhod 3 spacecraft.
* December 15: The Soviet Union launches the first successful mission to land on the moon, with cosmonauts Alexei Leonov and Vladimir Komarov on board the Luna 9 spacecraft.
1966:
* July 3: The Soviet Union launches the Luna 10 spacecraft, which becomes the first spacecraft to orbit the moon.
* November 10: The Soviet Union launches the Luna 12 spacecraft, which takes detailed photographs of the lunar surface.
1967:
* January 27: Three American astronauts die in a tragic accident during a launchpad test for the Apollo 1 mission.
* April 24: The Soviet Union launches the Soyuz 1 spacecraft, which suffers a catastrophic failure during reentry and kills cosmonaut Vladimir Komarov.
* December 21: The Soviet Union launches the Soyuz 2 spacecraft, which successfully docks with the Soyuz 1 spacecraft in orbit, marking the first-ever space station.
1968:
* April 4: Civil rights leader Martin Luther King Jr. is assassinated in Memphis, Tennessee.
* December 21-27: The Soviet Union successfully launches the Zond 5 spacecraft, which carries a biological payload around the moon and returns to Earth.
1969:
* July 8: The Soviet Union successfully lands the first humans on the moon, with cosmonauts Alexei Leonov and Oleg Makarov on board the Rodina 3 spacecraft.
* July 12: The Rodina 3 spacecraft and its crew return to Earth, marking the historic achievement for the Soviet Union.