engage this newly powerful xi on issues of joint concern. in the past, dealing with north korea's provocations has been one of the issues on which the u.s. and china cooperated. as relations have deteriorated, that cooperation has ended. i'm sure there will be a question this week, right now, can we get china part of a coalition to restrain xi before he tests a nuclear weapon? that would be a much more significant escalation of this crisis. >> and, david, i want to turn your attention to iran. a u.s. official tells nbc news the u.s. estimates about 280 people have been killed in the recent protests there. president biden made a comment last night about freeing iran before saying demonstrators there appear on track to free themselves. what is the situation in iran and we see iran getting closer and closer to russia, giving those drones, et cetera? >> so what we're seeing in iran, jose, is, i think, an