NATO estimates that some 20,000 Russian troops have massed along the border with Ukraine, just days after the U.S. and EU ratcheted up sanctions on Russia. Melissa Block asks David Remnick, editor of the New Yorker, about the possibility that Russia will invade Ukraine.
The European Rosetta mission arrives at its target comet Wednesday morning. In the coming months, its lander unit will harpoon the space rock.
Audie Cornish talks to Robert Turner, director of operations for the United Nations Relief and Works Agency, about what the organization is calling a "health and humanitarian disaster" in Gaza.
President Obama capped the U.S.-Africa Business Forum in downtown Washington, D.C., with a speech to the collected leaders and business people at the conference.
While the U.S.-African Leaders Summit has aimed to facilitate meetings between American companies and African leaders, it's also provided an opportunity for smaller investors to make contacts and for human rights workers to try to get their voices heard.
A U.S. Army major general was killed and another 15 other soldiers — including a German brigadier general — were injured when a man dressed in an Afghan military uniform opened fire on them. The attack took place in Kabul City, Afghanistan.
Federal prosecutors have formally charged the owner of an anti-aging clinic with distributing illegal steroids. Anthony Bosch surrendered to federal agents, and he has been cooperating with investigations. Last year, Major League Baseball suspended a dozen players, including Alex Rodriguez, with ties to Bosch and his clinic.
Another kind of border security issue is afoot in Texas, where the region's network of pipelines has seen a steady rise in the number of murder victims in the past decade. Joe Carroll of Bloomberg News explains the situation.
After Tuesday's African summit sessions, the White House is preparing to host the 50 heads of state and the chairman of the African Union for dinner. What goes into preparing a formal dinner for 400?
In Cleveland, a public hospital may be succeeding at the seemingly impossible: saving money while making patients healthier. It's doing so by giving patients personalized attention.