The key here is that when talking to an American, "you" means every American since the founding of the US. Collectively, that's an endless mine of material. Wh

The key here is that when talking to an American, "you" means every American since the founding of the US. Collectively, that's an endless mine of material. When talking to anyone else, "you" means one individual, like Putin, plus one can be sure an American won't remember a single thing he did more than a year ago and that can be dismissed as a digression in any case.