You believe that what you believe is true (you have to by definition). But is it? What is truth? That's the whole point of propaganda in shaping public opinion.

It can also be very subtle because what you are told may be "true" but may not be the whole truth and may not give a comprehensive account of all the facts at play. I think that's broadly what separates propaganda in Western countries (where outright lies are difficult to sustain) vs propaganda in dictatorships.

In Europe the reactions to apparent changes in US policy are overblown, the "Russian threat" is overblown. Both are for a reason. But it seems that people have been so "prepared" that governments can announce doubling defence budgets (with what money?), conscription, the EU stepping into defence and almost no-one blinks.