article_snippet: (CNN)On Friday, ISIS claimed responsibility for Yemen's deadliest terror attack.
article_snippet: A day earlier ISIS claimed responsibility for Yemen's deadliest terror attack.
article_snippet: ISIS was only thought to have a fledgling presence in Yemen and had only claimed one previous attack, the assassination of a Yemeni security official north of Aden earlier this month.
article_snippet: Al Qaeda in Yemen, or AQAP, has for years been the dominant Jihadi group inside Yemen, but Yemen denied involvement in the mosque attacks, saying Yemen was against Yemen principles to target mosques, bolstering the ISIS claim.
highlights_snippet: ISIS was only thought to have a fledgling presence in Yemen, but claims responsibility for bombing there .
  