Article continues below advertisementWhen news broke in the early hours of Saturday that the U.S. and Israel had launched strikes on Iran - with Iran retaliating against neighboring countries hosting U.S. bases - late-night comedians pivoted fast. By Saturday night, punchlines were flying almost as quickly as missiles.Article continues below advertisement'SNL' Goes Straight for World War IIISource: @jajcenter/INSTAGRAMJames Austin Johnson opened the show with his Donald Trump impersonation.