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Alleged "Batman" theater gunman James Holmes meticulously planned the 2012 massacre after breaking up with his girlfriend and flunking college, prosecutors said Monday, giving harrowing details of the slaughter. In opening remarks at Holmes' trial, prosecutor George Brauchler gave the first authoritative blow-by-blow account of the killings that left 12 dead and 70 injured in Aurora, Colorado. The death toll could have been much higher, Brauchler said -- but a gun cartridge jammed in the movie theater, while booby-trapped explosives he rigged at his apartment failed to go off.
The United States and Japan unveiled new rules for defense cooperation in a historic move that will give Japanese forces a wider global role amid concerns over China's rising sway. Under the revised guidelines, Japan could come to the aid of US forces threatened by a third country or, for example, deploy minesweeper ships to a mission in the Middle East. US Secretary of State John Kerry and Defense Secretary Ashton Carter revealed the new rules alongside Japanese Foreign Minister Fumio Kishida and Defense Minister Gen Nakatani after talks at a New York hotel. Although officials said the new doctrine is not aimed at China, there has been increasing concern over moves by Beijing to try to scoop up disputed areas of the South China and East China Seas.