protesters climbed on top of the arc de tropmhe war memorial and daubed graffiti on its base. the leaders of china and the united states have begun a meeting, as the 620 summit closes in argentina. president trump said he expects to reach some sort of agreement with president xijinping on their trade dispute. the white house says there will be a national day of mourning next wednesday for the former president, george hw bush, who's died aged 94. arrangements are being made for a state funeral at washington national cathedral. the new mexican president, andres manuel lopez obrador, has been sworn in at a ceremony in mexico city. he ran on a campaign promising a peaceful yet radical transformation of the country, and a vow to tackle corruption. at 10pm, clive myrie will be here with a full round—up of the day's news. now though, it's time for our world. look at this. wow. this is the story of a search... it's like a city. we're not being allowed to get this close to it at all. ..for something china doesn't want us to find. it is a story of broken families... ..broken faith... ..