Henry Kissinger’s style was to work outside the official machinery of the State Department and the foreign service, which he thought had sapped American diplomacy of its vigour and creativity.
Early in june 1970, soon after America had invaded Cambodia, Henry Kissinger secretly visited Brian McDonnell, a 27-year-old peacenik he had spotted in Lafayette Park opposite the White House. It was one of his many efforts that year to persuade his younger critics that they should give war a chance. As with so many others, …

