Barack Obama authorized targeted air strikes against Islamic militants on Thursday. American warplanes began bombing Islamic militant targets outside the Kurdish city of Irbil on Friday, in the first offensive action by the US in Iraq since it withdrew ground troops in 2011. [...]

Exclusive: Journalist uses Freedom of Information Act to disclose 1961 accident in which one switch averted catastrophe. A secret document, published in declassified form for the first time by the Guardian today, reveals that the US Air Force came dramatically close to detonating an atom bomb over North Carolina that would have been 260 times more powerful than the device that devastated Hiroshima [...]