A court in Montenegro has sentenced 13 people, including two Russians, to up to 15 years in prison after they were convicted of plotting to overthrow the country's government and prevent it from joining Nato.

The two alleged members of Russia's military spy agency had allegedly operated from Serbia.

Residents of the far eastern Russian city of Khabarovsk stocked up on water today before the arrival of a toxic chemical slick that could force authorities to shut off water and central heating despite subzero temperatures.