Yes, of course. They have had them since 1949.
1949
The largest KNOWN nuclear weapon was made by the Soviet Union (Russia) and was called the "Tsar Bomba" (King of Bombs). It had a yield of ~50MT.
perhaps biological
About as far as a US airliner to Russia. They will follow about the same ground track.
The United States did, closely followed by russia
The first Soviet nuclear weapon was tested in 1949. They have never used one in combat.
USA, Russia, UK, PRC, France, India, Pakistan, North Korea are known for having nuclear weapon. Israel probably also owns nuclear weapon but never officialy declared it.
first new clear weapon made is 1996
The meaning of the word nuclear weapon, is a weapon that has a nuclear warhead on it.
Russia started testing and constructing nuclear, and atomic bombs at the end of WW2. today, they own more the 4000 operational nuclear warheads. along with a total 12000 in storage.
Number of nuclear weapons by country: Country # of nuclear weapons USA 10'300 Russia 16'000 China 410 France 350
To prevent tough guys to play with the war. If we use the nuclear weapon, nobody will survive. Nobody should play with the war.