Al Qaeda
Two groups normally at odds may work together.
Presidential candidates talking about terrorism probably should be able to identify some actual terrorists.
WHAT'S HAPPENING
The al-Qaeda aligned group said it had killed 50 peacekeepers.
The war in Yemen has led to dangerous instability.
The Lebanese army has closer ties to Hezbollah than the U.S. wants to admit.
Disputes are raging among the Taliban since the death of longtime leader Mullah Omar.
The Nusra Front said it would maintain frontlines with Islamic State in other areas .
At least five people were killed, military officials say.