A wildfire sweeping through Arizona that has killed 19 firefighters has also destroyed around 200 houses, according to the Associated Press.
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The well-respected foreign policy hawk enjoyed his greatest successes as national security adviser to President Jimmy Carter.
Police have arrested two men aged 20 and 22 on suspicion of terror offences, bringing the number of people are now in custody to 11.
Among those attending the Soundgarden and Audioslave singer's funeral were Brad Pitt, Pharrell and Christian Bale.