Jidi, this is true: metric units, mm Hg, and QFE. However, the ATC at international airports will give you feet/NM/hPa/QNH on request. Russian approach plates are now published in both systems of units, but not all of them have been reissued yet. Some Russian airports are in Jeppesen, and the coverage is being expanded in the coming weeks (I personally translated 200-something Russian plates for them last month).