jsonstein@masto.deoan.org ("Jeff Sonstein") wrote:
“In 1994, Ukraine, Belarus and Kazakhstan surrendered all the nuclear weapons on their territory after the collapse of the Soviet Union to Russia, by signing the Budapest Memorandum and the Non-Proliferation Treaty. In return, the US and Russia, in particular, guaranteed their territorial integrity.”
for some definitions of guarantee
https://www.dw.com/en/ukrainians-react-to-trump-zelenskyy-fracas-in-white-house/a-71795975