You will find some on "the left" [0] who ostensibly condemn the Russian invasion but claim that, by providing Ukraine with the weapons, the intelligence and the financial aid it needs to defend itself, the West is somehow prolonging the conflict and causing greater suffering—the implication being that without such help, the war would be over much quicker (i.e. Ukraine would soon be defeated by Russia).

While given a particular set of moral values this may be a legitimate argument, it is strangely inconsistent with other comparable events. Virtually nobody on "the left" will ever claim that France and the UK should have not declared war on Germany when it invaded Poland so as to decrease suffering.

Going to a more local context, in my home country of Spain, many on the left hold a historical grudge against France and the UK for not coming to the support of the legitimate Spanish Republic in 1936 when a military/nationalist coup triggered what eventually became the Spanish Civil War and lead to Franco's far-right dictatorship. The USSR, in contrast, did come to the aid of the Republic for better or for worse. However, funnily enough, whenever I bring this point up with those who claim the West is "prolonging suffering" by supporting Ukraine, they never concede that France and UK's decision at the time would be consistent with their claimed non-interventionism, nor that the USSR prolonged suffering by supporting the eventually defeated Spanish Republic.

[0] I hate the oversimplification and forced dichotomy that results from talking about "the left" or "the right", hence the quotation marks.