The West is not “continuing the war at will.” That phrase has no meaning in this context. The West is supplying Ukraine with the means to continue to resist the illegal Russian invasion.

The West would in fact have the right under Just War theory to enter into combat operations in Ukraine against Russian forces, and to operate combat operations against Russia up to and including invasion. Because Russia is the aggressor, Just War theory gives other nations the right to participate in the resistance of aggression.