Countries shouldn't give Ukraine any nuclear weapons

Russian President Vladimir Putin argued in early December that the risk of a nuclear war was growing. The US or other members of NATO, like Britain, which strongly supports Ukraine, could provide Ukraine with tactical nuclear weapons. It might deter Russia from becoming more aggressive in Ukraine let alone using nuclear weapons there, without putting NATO at risk since Ukraine, not NATO, would be the one that might use nuclear weapons, as Ukraine did so far with the conventional NATO arsenal. However, this is a dangerous and problematic option because of several factors.

Can NATO trust Ukraine with nuclear weapons?

NATO, as part of assisting Ukraine, has become familiar with Ukraine, mostly with its military and leadership. However, those relations are still relatively new compared with the ties between NATO members. NATO might not fully understand the Ukrainian decision-making process, which is crucial if Ukraine holds nuclear weapons. Giving nuclear weapons to Ukraine might come with severe constraints, such as that only President Volodymyr Zelensky would have the right to authorize the use of nuclear weapons.