Military officials say the shootings at Fort Hood were an 'isolated incident.' But the stress of repeated wartime deployments has led to several such incidents in recent years.
Pentagon chief Robert Gates is the swing vote in Obama's decision on the Afghanistan war.
Critics of Colombia President Álvaro Uribe's decision to sign the accord say it is 'unbalanced' for Colombia. Far-left and moderate leaders alike have expressed concerns about an increasing US presence in the region.
Congress passed a new law Tuesday that allows the Obama administration to keep secret photos of detainees alleged to have been abused by US military and intelligence personnel.
Gen. Stanley McChrystal included an option to send at least 60,000 more US troops to Afghanistan.
Obama will be the second US president to speak before the Human Rights Campaign, a leading gay rights organization.
Guinea erupted into violence Monday when protesters rallied against rumors that Dadis Camara would run for president. Prior to the violence, he sat down for a rare interview with a Westerner.
A nuclear reactor was sold to Iran as part of President Eisenhower's "Atoms for Peace" program. But even then the US had concerns about what might happen if the Shah fell to 'domestic dissidents.'
The graduation of eight officers without flight training points to the increased use of remote-controlled aircraft for reconnaissance and intelligence in Iraq and Afghanistan.
The president presented the military's highest honor Thursday to a soldier who was killed trying to save a comrade in Afghanistan. The Pentagon is looking at why only six Medals of Honor have been awarded after eight years of war.