They've learnt, often through bitter experience, how misguided and deluded their own feelings may be and hence look rather skeptically and caustically upon them.
Western policymakers are deluded to think that they can use their twilight of pre-eminence to lock rising powers into their own values and institutions.
Neither he nor Palmerston " most strangely believed" in any proposition so obviously and palpably absurd, nor did Napoleon delude himself with philanthropy.
He deluded himself into thinking that the grapes were sour and the chipmunks immoral, and by deluding himself, he blocked himself from the solution to his own problem.