Polls closed in Uganda on Thursday after a chaotic day of voting that took place under an internet blackout and with long delays caused by technical breakdowns as President Yoweri Museveni seeks to extend his 40 years in power.Museveni, an 81-year-old who came to power at the head of a rebel army in 1986, is widely expected to win a seventh term in office thanks to his total control of the state and security apparatus.But inside a Kampala stadium in an opposition stronghold, there were loud cheers as a crowd watched the counting of votes and returning officers read out...