Serbia Hosts Military Exercises with Russia

Under a hail of gunfire, Serbian special forces are on the move. And watching the ground assault from a safe distance are Russian and Serbian military officials. The unprecedented joint military drill underscores a delicate balancing act for Serbia -- safeguard relations with its big-power ally in Russia, while pursuing closer integration with Europe. It's a balancing act made all the more difficult amid rising European anger over Russian involvement in Eastern Ukraine.