The Russian Orthodox Church sees itself as the spiritual generator of public policy and the ideological bulwark of the state. Under Putin, priests have become fixtures in the military, schools, and other public institutions.
The fate of the two pilots who ejected from the downed plane is unclear. Turkey had objected last week that Russia was bombing Turkmen rebels in Syria.
The Metrojet jet was downed over Egypt's Sinai Peninsula on Oct. 31, an attack claimed by Islamic State. Russian officials say there is growing consensus with Western powers on fighting Islamist terrorism.