Ukraine unfortunately became a reminder that nuclear weapons are still required for the safety of a nation. Ukraine gave theirs up after the crumble of the Sovjet Union for assurances of independence and sovereignty by other nations, including russia. Since russia disrespected these guarantees, they showed they can't be trusted and every nation that does not want to be attacked by russia will henceforth need nuclear deterrent. It's unfortunate and sad, but there is no future for nuclear disarmament while russia still has nukes.