Rick Gladstone The New York Times

The United Nations Security Council has scheduled a vote, likely for Wednesday, on a resolution that would toughen sanctions on North Korea in response to its latest nuclear weapons testing and the launching of a ballistic missile.

It is impossible to independently verify the assertion because Twitter's data is not public.

At a time of growing tension over its nuclear programme and mounting belligerence toward the West, Iran reported on Wednesday that an Iranian nuclear scientist died in what was termed a "terrorist bomb blast" in northern Tehran when an unidentified motorcyclist attached a magnetic explosive device to his car.

International calls mounted Friday for Libya's interim leaders to provide a fuller accounting of the final moments before Col. Muammar el-Gaddafi's violent, messy death, as new videos circulated that showed him and his son Muatassim alive, apparently while in the custody of the former rebels.

Colonel Muammar el-Gaddafi's last moments on Thursday were as violent as the uprising that overthrew him.

The United Nations Security Council has scheduled a vote, likely for Wednesday, on a resolution that would toughen sanctions on North Korea in response to its latest nuclear weapons testing and the launching of a ballistic missile.

It is impossible to independently verify the assertion because Twitter's data is not public.

At a time of growing tension over its nuclear programme and mounting belligerence toward the West, Iran reported on Wednesday that an Iranian nuclear scientist died in what was termed a "terrorist bomb blast" in northern Tehran when an unidentified motorcyclist attached a magnetic explosive device to his car.

International calls mounted Friday for Libya's interim leaders to provide a fuller accounting of the final moments before Col. Muammar el-Gaddafi's violent, messy death, as new videos circulated that showed him and his son Muatassim alive, apparently while in the custody of the former rebels.

Colonel Muammar el-Gaddafi's last moments on Thursday were as violent as the uprising that overthrew him.