Here is Jeffrey Sachs on Obama’s war and peace legacy:

Viewed through the lens of history, the main job of US presidents is to be mature and wise enough to stand up to the permanent war machine. Kennedy tried; his successor, Lyndon Johnson, did not, and the debacle of Vietnam ensued. Jimmy Carter tried; Reagan did not (his CIA helped to unleash death and mayhem in Central America throughout the 1980s). Clinton mostly tried (except in the Balkans); George W. Bush did not, and generated new wars and turmoil.

On the whole, Obama has tried to restrain the warmongers, yet he has given in to them frequently – not only by relying on weaponized drones, but also by waging covert wars in Syria, Libya, Yemen, Somalia, and elsewhere. Nor did he truly end the US wars in Iraq and Afghanistan; he replaced troops on the ground with US drones, air strikes, and “private” contractors.

Iran is surely his finest moment, a historic milestone that demands full-throated approval. The political difficulty of making peace with Iran is similar to that of JFK’s peacemaking with the Soviet Union in 1963.