The world seems to have understood that Ukraine must win this war, that Putin cannot be allowed to emerge victorious — Western leaders have often made such statements. This understanding is fuelled not that much by sympathy for Ukraine, but rather by the realisation that Putin’s regime is a menace to the whole of Western civilisation; that if Putin reaches his goal of destroying Ukraine he will not be satiated, just as Hitler was not satiated with annexing Austria and the Sudetenland, but will continue “returning what is his”. That is, the world has understood that no amount of appeasing can provide a peaceful coexistence with Vladimir Putin.
However, within this understanding there exist differences of opinion. One could give Ukraine everything it needs for a swift and decisive victory. This would lead to a fairly quick liberation of all Ukrainian territories, including Crimea. Or one could provide Kyiv with limited arms, enough to deter Putin and engage in positional warfare, but not enough for Ukraine to triumph on the battlefield.