2. More deadly attacks broke out in nations already weary with violence.

In Egypt, at least 28 people were killed by gunmen who stormed buses carrying Coptic Christian worshipers; many victims were shot at close range. Hours later, Egyptian jets carried out airstrikes on six militant camps in eastern Libya. Above, a funeral for the victims in Egypt.

The Taliban stormed an Afghan Army outpost Kandahar and killed at least 15 soldiers in hours of fighting — the latest in a wave of attacks in the strategically vital province.

And in Iraq, video smuggled out of the country and broadcast by ABC News appears to show an Iraqi special forces unit — one that has been praised by the U.S. — torturing and executing civilians in Mosul last year.