also with us, leslie vinjamuri, associate fellow focusing on the americas at chatham house. leslie, i'm not sure what you make of the fact that the u.s. has pulled out, whether it means that trump wants to get back on track, speaking to his base, whether it means the u.s. will be isolated, or whether it is. read in to climate change and his thoughts on it. leslie: i read this as trump trying to secure his base as he looks forward to the midterms and the next election but it doesn't really make sense. what we've seen from much of the data is that 47% of trump voters supported staying in paris and about 28% wanted to pull out. if you look carefully, it is not clear that donald trump has a very good read on the base. his approval ratings are around 40% but the strong approval part of those ratings have dropped to 20%. there is a perception that he's losing. if you listen to the rhetoric, he framed this very much as about being us versus them, that the world is against the united states. again, that doesn't matter with what we're seeing. americans have broadly supported staying i