Rescuers vow to find helicopter that vanished in strong winds on 10 October.
Four people killed, six missing, 46 injured in Siberia after a river boat crash which was caused by a drunk captain, claimed police.
Hopes fade of finding 13 people, six weeks after Tyva Avia aircraft went missing in remote and mountainous region.
Probe into gas blast at Achinsk refinery in the Krasnoyarsk region.
54 reported missing after seven rescued in high seas with strong winds.
Private helicopter brought in to located Tyva Avia aircraft that had 13 people on board in remote Siberia.
Viktoria Povesma, 20, went missing after night out with friends, and later her severed head was found in a plastic bag.
President meets with people affected and pledges support, new homes and financial aid to ensure Khakassia can rebuild.
Intense search reveals no sign of Mil Mi-8 lost early Saturday with 12 people on board.
Marooned men went for up to 3 weeks without food on island in Laptev Sea in temperatures of minus 15C.