Russia
Russian 'Noah's Ark' satellite carrying 1,500 animals crash-lands on Earth
The extraordinary experiment is said to be a vital step in a future manned mission to the stars
Russian nuclear sub suffers 'serious accident' in the Mediterranean and at 'risk of explosion'
The diesel-electric attack vessel accommodates 52 crew members and has the capacity to remain submerged for up to 45 days
Kremlin issues dire war threat to West - just as Nato confirms plans to shoot down Russian planes
Poland has warned that continued incursions by Russian aircraft is the 'closest we have been to open conflict since World War Two'
