we begin in venezuela, where the security services have taken two opposition leaders off to a military prison, a move that s been widely condemned. after months of violent protests and deaths, the un secretary general has said rising political tensions are making it harder to find any peaceful solution to the current crisis. venezuela has some of the world s largest proven oil deposits but 82% of venezuelans live in poverty. former president hugo chavez, who died in 2013 after 1a years in office, styled himself a champion of the poor and poured billions of dollars of venezuela s oil wealth into social programmes. his successor, nicolas maduro, has struggled to cope with inflation running at more than 50% a year, plummeting oil prices and accusations of corruption. the bbc‘s katy watson sent this report from caracas. antonio ledezma screams for help as he s taken away in his pyjamas by the venezuelan intelligence service. there s panic, while someone else yells that venezuel