drone last week. the sanctions are the latest example of mr. trump engaging in bringsmanship with a foreign adversary, something he's tried time and time in the past. a pattern that raises the question, whether this is brinksmanship or more bluster. >> president trump is ratcheting up the pressure on iran. announcing what he described as new hard hitting sanctions on tehran's top leaders adding the move is partly in retaliation for a downing of a u.s. drone last week. >> this, you could probably add it into this, but basically, this was going to happen anyway. >> as he's done in the past with other adversary, he teased more tough action could be on the way if iran doesn't change its behavior. >> i won't say what i would do, but i don't think they should do it. >> it's a kind of brinksmanship he has used with mixed results. consider what he discussed moments after he delivers the sanctions on iran. he just received a birthday present from kim jong-un, the