Russian helicopters

India to sign contract for co-production of 200 Russian Ka-226T choppers

India-Russia JV for Kamov choppers registered, negotiations on

Russia says informed US of toxic substance attack by rebels in Syria's Aleppo

Rescuers say toxic gas dropped on Syrian town where Russian helicopter shot down

GRISLY VIDEO: Russian helicopter shot down in rebel-held Syria

Russian helicopters spotted at Syria airfield: US officials