The point was that they will preempt any such action by engineering a declaration of independence. If Communist Danish troops set foot on that island, their chances of getting it back in their camp go to Hell, because Soviet troops will likely soon follow. Whatever will keep Communist troops from landing there until they can engineer this, is what they will do. They'll come up with some diplomatic pretext for this exclusion, but it will happen. Danish troops simply will not be permitted to set foot on the island.
You keep acting like the US and the USSR were still actually allied in mid-1945, rather than just co-belligerents, and like that status would mean something. We essentially were not, and it did not. If Truman felt the need to secure something against Communist seizure, he would have done so regardless of the USSR's reaction. After all, the USSR was in no shape to continue prosecuting a war, and the United States and United Kingdom were well aware of this.
you can bend the words all you wan't, but officially The USSR and the US were allies in the war against Germany. So you really believe that within a couple of weeks the US can carry out a unilateral annexation (decleration of independence) of Greenland? I'm sorry, but I do believe that things takes a little longer in real life, than in this forum.
IF communist Denmark manages to land troops they will in effect deliver a fait accompli to the US, and all plans for a unilateral declaration of independence. So the final question will be who can racts the fastest, and my claim is that it is easier to ship or fly in some troops, than conducting the major diplomatic exercise of declaring part of another country, as independent.
But hey....we can always agree to disagree.
I must agree with you that the Soviets have no desire to start a war over this....but remember neither has the UK or USA