According to a survey of historians, experts and practitioners by Michael Cohen, 4 of the 5 worst foreign policy presidents of the 20th century were Democrats: Truman, Wilson, Carter and LBJ. (Nixon was the sole Republican to make the Bottom 5; George W. Bush served in the 21st century and, luckily for him, wasn’t eligible.)Only 2 Dems made the top 5 list: FDR at number 1 (winning that WW2 thing was a big plus) and JFK at number 5 (ranked, apparently, more because he “grew” than because of much that he actually did). The other three top presidents were, in ascending order, Reagan, George H. W. Bush, and Dwight Eisenhower.Biggest surprises: low marks for Truman and Nixon. Most satisfying downgrade: Woodrow Wilson.Promise: a Mead list of best and worst presidents will be forthcoming. In the meantime, go look at the Cohen list at The Atlantic and argue it out.