@cbsnews: President Trump to reporter asking him to clarify his stance on NATO's mutual defense clause, known as Article 5 of the NATO founding treaty: "I stand with it, that's why I'm here. If I didn't stand with it, I wouldn't be here." The comments come a day after telling reporters on Air Force One en route to the NATO summit that there are "number definitions of Article 5" and "I'm committed to being their friends." NATO members are bound to back each other militarily in the face of any aggression under the collective defense clause in the alliance's founding treaty. #trump #nato