Boris Berezovsky, the exiled Russian billionaire and fierce Kremlin critic who lives in London, has been formally accused by Russian authorities of plotting a coup.

Released BBC correspondent Alan Johnston, kidnapped March 12 in Gaza by a group calling itself the Army of Islam, described his nearly four months in captivity as being “buried alive.”

At least 12 people were killed and 58 injured when two buses crashed head-on in Egypt’s Sinai peninsula on Tuesday, a security source said.