The FBI is looking into allegations that online accounts of several celebrities had been hacked. Apple says it is determining whether its online photo-sharing service had been hacked.
A day after an Islamic-extremist group launched an attack in Somalia, U.S. military forces have struck back. A Pentagon spokesman says the results of the operation are being assessed.
NATO leaders are expected this week to set up a rapid-response force to defend against potential Russian aggression.
President Obama heads to Europe this week to take part in the NATO summit. The alliance is weighing how to respond to Russia's incursions into Ukraine.
Ebola has exposed weaknesses in Africa's health networks and a failure to work together to arrest the spread of the virus. The "not our problem" response is taking an economic toll on the continent.