Inviting the world to mistrust the next President?

Obama uses a big word, realpolitik, to talk in Europe about Trump's policies. The Oxford dictionary defines realpolitik: "a system of politics or principles based on practical rather than moral or ideological considerations." Ann Althouse wonders,

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?

If you watch the video, notice how much difficulty Angela Merkel has listening to Obama. We feel your pain, Angela!