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  Photos of the week

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  Rain doesn't dampen enthusiasm for Vietnam's annual buffalo-fighting festival

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  Mother fights brain cancer with electric fields

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  Kiev says cannot withdraw heavy weapons as attacks persist

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  Rebels order weapons pull-back as Ukraine says armor arriving

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  Merkel to urge caution in U.S. as pressure builds to arm Ukraine forces

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  War-torn Syria rings in New Year much like it ended 2014

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  Syria rebels load shells into tanks, Russian diplomat meets Assad

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  Bionic eyes: a look into the future

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  Kurdish forces battle Islamic State militants in Kobani

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  South African HIV activists try to shift focus to prevention

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  Syrian rebels fight on two fronts - Islamic State and government

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  Worst Ebola outbreak on record tests global response

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  Syrian rebels advance in Deraa as fighting rages

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  Fierce fighting in war-torn Syria - amateur video

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  Erdogan says IS fight focusing too much on Kobani

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  Libya's armed factions clash in Benghazi

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  Obama says focus must be on stopping Ebola “at source“

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  Guns fall silent in Lebanon's Tripoli after deadly clashes

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  In Benghazi, Libya's army liberates a ghost town

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