WASHINGTON (AP) — Mike Pompeo took over as America's top diplomat Thursday after being confirmed by the Senate and sworn in across the street minutes later. The new secretary of state immediately dashed off to Europe in an energetic start befitting the high-stakes issues awaiting him from Iran to North Korea.

The hard-charging former CIA director was confirmed on a 57-42 vote — one of the slimmest margins for the job in recent history. Every past nominee to get a roll call vote since at least the Carter administration received 85 or more yes votes in the Senate, with the exception of Trump's f...