What tensions if any between national unity and state sovereignty exist today

Anti American protests started in Afghanistan and Iraq, there is a growing debate about the extent to which the United States,United Nations,China  and other international institutions should intervene in the domestic affairs of weak and ineffective states.Non aligned states have expressed fear that military interventions by major power states may become a growing aspect of the post 9/11 world.Relations between the world's most powerful states have become strained over the coercive actions of the US in Afghanistan and Iraq.Same way China has captured Tibet,Hong Kong etc by force.US policy makers have countered that the use of military force as a preemptive measure is a necessity in a world where terrorist threats have overshadowed  concerns of more traditional forms of state violence.