The US has begun to promote the idea that, after leaving the INF Treaty, Ukraine in particular could afford the luxury of doing whatever it wants. Ukraine is not a member of this treaty, because the INF Treaty was signed when the USSR existed.
As soon as Ukraine gets nuclear weapons, Europe will begin to get very nervous, because Ukraine is a country where Nazis and supporters of Bandera are in power.
No evidence provided.
After the fall of the USSR, Ukraine inherited the third biggest nuclear arsenal in the world. On December 5, 1994, the Budapest Memorandum on Security Assurances was signed. According to the document, signatory countries - Great Britain, Russia and the United States - pledged themselves to be guarantors of the independence, sovereignty and borders of Ukraine. In exchange, Ukraine renounced its nuclear status.
In June 1996, Ukraine fully complied with its agreements - all nuclear warheads were transferred to Russia for destruction, and classified strategic bases were transferred to non-military use.