5/20: NATO summit, Egypt's Christians, Ping Pong prodigy

      |The growing frustration with the unpopular war in Afghanistan has made an exit strategy the main topic at the NATO summit in Chicago; Then, with Egypt's upcoming presidential election the Christian minority feels their situation will go from bad to worse; Also, 16-year-old Ariel Hsing is the United States' best hope at winning an Olympic gold medal.

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