Rarely has a U.S. president been so wrong about so much at the expense of so many. Too many times to count, Mr. Obama has told us he is "ending" the wars in Iraq and Afghanistan—as though wishing made it so. His rhetoric has now come crashing into reality. Watching the black-clad ISIS jihadists take territory once secured by American blood is final proof, if any were needed, that America's enemies are not "decimated." They are emboldened and on the march.