There has been an explosion at the US embassy in Montenegro, officials say.
As regional powers confront each other on the battlefield, Syrians keep dying.
But this year's gathering is more likely to be remembered for saber-rattling and ultimatums, and the lack of discernible progress on resolving lingering conflicts or brewing crises around the world.
U.S. strategic and tactical nuclear weapons on land, in the air, and at sea, will undergo costly and extensive modernization in the coming years.
The year 2016 was catastrophic for Turkey. At least 30 terror attacks across the country took more than 300 lives.
How Myanmar forces burned, looted and killed in a remote village
Residents said they saw warplanes flying above the Suez Canal city of Ismailia, which borders North Sinai to the west
Challenges for the West in Dealing with Returning Foreign Fighters