I don't follow your logic.
The veracity of the claim is that Flynn was "Chief of joint war plans", so he was involved in the planning of the UN troops.
The deepstate has been seeking an excuse to call in the UN for years. They are determined to use the UN in lieu of US soldiers.
The whole thing makes no sense either way since (no name) passed legislation which allows the Gov_ment to circumvent Posse Comitatus when they have the feels.