事实上，在奥巴马接手的所有美国安全战略挑战中 — — 包括朝鲜、伊拉克、阿富汗、巴基斯坦和以色列-巴勒斯坦冲突 — — 他几乎没有取得任何重大政治成果。
In fact, in all of the strategic challenges to US security that Obama inherited – Iran, North Korea, Iraq, Afghanistan, Pakistan, and the Israeli-Palestinian conflict – he has made virtually no significant political gains.