Genre all his own. Nightly news begins right now. Announcer this is nbc nightly news with lester holt. Good evening. The Trump White House may tonight be on the verge of launching a Major Military strike against syria. President trump spent part of this day huddled with his top military advisors reviewing options that may include keeping syrias air force out of the sky or Cruise Missile attacks as a way of punishing the Syrian Government for the horrific chemical weapons attack earlier this week on civilians and a major policy shift, the Trump Administration is speaking openly about the need to remove Bashar Alassad from power. We have two reports beginning coverage with nbcs chief White House Correspondent hallie jackson. Reporter this tonight is the ultimate test for a commander in chief whether to activate the military in this case after a humanitarian crisis that has gripped the country with the world watching. Stepping off his plane into the center of an international crisis. Pres