U.S. spy agencies are struggling to stay on top of intelligence about Syria.
Obama calls the beheading of U.S. aid worker Peter Kassig "an act of pure evil".
At 8 AM on Monday, as students in Nigeria gathered for a school assembly, a suicide bomb attack targeted dozens of schoolboys.
Fighters associated with al-Qaida have overrun northern bastions of U.S.-backed Syrian rebels.
Military trucks were spotted departing from the base northeast of Kurdish regional capital Arbil, presumably headed toward the Syrian battleground Kobane.
Abdirizak Bihi is a youth leader in Minnesota who works to help young Somali Americans reject the recruitment of religious extremists.
Even with accurate air strikes and Kurdish fighters battling against IS jihadists, the Pentagon warns that there will be "no quick and easy end to the fighting."
In Baghdad, actors and artists are battling back against IS with a comedy TV show.