Why do people repeat and believe this "goodwill" propaganda? Countries don't behave out of goodwill, they do out of interests. Same as now. This "decoupling"

Why do people repeat and believe this "goodwill" propaganda? Countries don't behave out of goodwill, they do out of interests. Same as now. This "decoupling" angle is a product of interests in the EU "deep state", which sees an apportubity to do a power grab. Note how suddenly the EU tries to insert itself in military matters... and people buy it hook, line, and sinker, too.