<h1>Territorial sovereignty: reported demands for territory and resources raise international law and multilateral governance concerns.</h1> Reported demands by the United States for territory and strategic resources implicate core international law principles-territorial sovereignty, the prohibition on acquisition of territory by force, and the purposes of post war multilateral organisations-while unilateral policy shifts and reduced reliance on established diplomatic forums create legal uncertainty about treaty obligations, enforcement of international norms, and alliance governance amid an ongoing armed conflict in Europe.