Four Polish soldiers previously acquitted of killing Afghan civilians in a war crimes trial in 2011 have gone on trial in Warsaw for a second time.
Eight people were killed in the Afghan village of Nangar Khel when Polish troops opened fire on a wedding party in August 2007.
Military prosecutors appealed after seven soldiers were cleared of war crimes in the 2011 trial for lack of evidence. The court upheld the acquittal of three but ordered a re-trial for the others, who insist they are innocent.
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