WW III ?

Ukraine inherited "as many as 3,000" nuclear weapons when it became independent from the Soviet Union in 1991, making its nuclear arsenal the third-largest in the world. By 1994, Ukraine had agreed to dispose of all nuclear weapons within its territory, with the condition that its borders were respected, as part of the Budapest Memorandum on Security Assurances. The warheads were removed from Ukraine by 1996 and disassembled in Russia. Despite Russia's subsequent and internationally disputed annexation of Crimea in 2014, Ukraine reaffirmed its 1994 decision to accede to the Nuclear Non-Proliferation Treaty as a non-nuclear-weapon state.

Pavlo Rizanenko, a member of the Ukrainian parliament told USA Today that Ukraine may have to arm themselves with their own nuclear weapons if the United States and other world leaders do not hold up their end of the agreement. He said "We gave up nuclear weapons because of this agreement. Now, there's a strong sentiment in Ukraine that we made a big mistake." He also said that, "In the future, no matter how the situation is resolved in Crimea, we need a much stronger Ukraine. If you have nuclear weapons, people don't invade you.