Is US diplomacy under friendly fire?

After six months of the Trump Administration, America's professional diplomats are reportedly "desperate" for a foreign policy — or even for something to do. They complain that Secretary of State Rex Tillerson has walled himself off from the diplomatic corps and that he's being walled off from the White House. Ambassadorships and other important jobs are going unfilled, and budget cuts may add to the hollowing out of a veteran staff already depleted by resignations. What's at stake for America's interests — and American values — around the world?