-OpEd- WASHINGTON, D.C. — President Trump appears to have found himself a new national security adviser. His name is Barack Obama. Recent days have brought evidence of two foreign policy successes for the Trump administration: On Friday, a top State Department official who has served in the Obama and Trump administrations announced that gains against the so-called Islamic State have picked up sharply and that the militants have lost 78% of their territory in Iraq and 58% in Syria. The Washington Post“s headline (which the White House circulated in an email): “Under Trump, gains against ISIS have dramatically accelerated.” Then, […]