A huge bomb exploded during evening prayers Wednesday at a mosque in Afghanistan's capital, killing many worshippers and injuring dozens of others, according to local media. In multiple videos posted on Twitter following the blast, blood was seen throughout the main prayer hall of Abu Bakr Siddique Mosque in Kabul, which is adjacent to an Islamic seminary in the Khairkhana Kotal neighborhood. #BREAKING 21 killed, dozens wounded in an explosion ...