I'd seen the remark quoted in various places — such as the NYT — and I'd thought it was inappropriately disrespectful to Trump, who should not be undercut in the difficult enterprise that lies ahead. If Obama is genuinely worried that Trump might "simply take a realpolitik approach" and fail— as he puts it — "to stand up to Russia where they are deviating from our values and international norms," should he be airing this suspicion on a stage in Berlin, inviting the world to mistrust the next President?
In the larger context of the clip I made, the airing of suspicion does not feel as stark. I'm not surprised that the American news media chooses the quote that heightens the sense that Obama mistrusts Trump. But I do think Obama should take care to preserve confidence in the new administration, especially when speaking about foreign policy in a foreign country. But Obama does seem to be taking great care. He's speaking slowly and deliberately — maybe in part because he's truly weary — and the statement you see here is a highly processed version of what he really thinks about Trump and Putin.
Compare it to what he said when he was campaigning for Hillary in September:
“Just last week, [Trump] went on Russian state television to talk down our military and to curry favor with Vladimir Putin. He loves this guy... Think about what’s happening to the Republican Party... They used to be opposed to Russia and authoritarianism... And now their nominee is out there praising a guy, saying he’s a strong leader because he invades smaller countries, jails his opponents, controls the press and drives his economy into a long recession.... Think about the fact that that’s Donald Trump’s role model... I have to do business with Putin, I have to do business with Russia, that’s part of foreign policy, but I don’t go around saying, ‘That’s my role model.’ Can you imagine Ronald Reagan idolizing somebody like that?”