Ukraine tensions: US sources say Russia 70% ready to invade

Russia has assembled about 70% of the military capability needed for a full-scale invasion of Ukraine in the coming weeks, US officials say.

The ground is expected to freeze and harden from mid-February, enabling Moscow to bring in more heavy equipment, the unnamed officials said.

Russia is said to have more than 100,000 troops near Ukraine's borders but denies planning to attack.

The US officials did not provide evidence for their assessment.