An 84-year-old nun was sentenced to nearly three years in prison for breaking into a US nuclear weapons complex and defacing a bunker holding bomb-grade uranium, a demonstration that exposed serious security flaws. Two other activists who broke into the facility with Megan Rice were sentenced to more than five years in prison yesterday, in part because they had much longer criminal histories of mostly non-violent civil disobedience... ...On July 28, 2012, the three activists cut through three fences before reaching a 548 million dollar (£328 million) storage bunker... ...They hung banners, strung crime-scene tape and hammered off a small...