One of the world's most renowned experts on Venezuela has told FRANCE 24 that the calculation for Nicolas Maduro is whether he can survive the current crisis, as US President Donald Trump continues to ramp up pressure on the Venezuelan leader to go – even offering him safe passage out of the country. Christopher Sabatini is Senior Research Fellow for Latin America, the US and the Americas Programme at Chatham House. He said there will come a point when Trump has to move on from verbal threats if Maduro doesn't step down. He spoke to us in Perspective.