So which leftist viewpoint upholds the concept of a capitalist state’s right to sovereignty?

Anarchists and MLs alike should support the people of Ukraine and Russia in resisting occupation by either state as both care not for their war dead and wounded but only for control of resources and power.

Btw I don’t think you should be banned for arguing this, it is important we critically listen to the ppl most directly affected by this, while being careful not to uncritically absorb ultranationalist or capitalist propaganda.