Uganda's long-time leader Yoweri Museveni has won the country's presidential election, officials say, amid claims by the main opposition leader of "massive ballot stuffing". Mr Museveni, 81, has been in power for 40 years and is set to serve a seventh term in office after securing 71% support this time, according to the electoral commission. His main challenger, musician-turned-politician Kyagulanyi Ssentamu, better known as Bobi Wine , gained 24% of the vote. Mr Wine, of National Unity