Colombia goes to the polls to elect new president

There's tight security in parts of Colombia as polls open for today's presidential election with a human rights activist and a far-right populist nicknamed “the Tiger” among the frontrunners. We'll have the latest from Bogota.Also on the programme: Israel says it's moving further into southern Lebanon as its war against Hezbollah intensifies; and a Georgian wine cellar once owned by Soviet leader Joseph Stalin has officially been unsealed. (Photo: Workers stick campaign posters of the Historic Pact (Pacto Historico) on the day of the presidential election in Corinto, Colombia on May 31. Credit: Reuters)