TODAY: Plane crash outside Moscow kills 71; Roskomnadzor blocks Navalny’s Deripaska exposé; Muscovites use pro-Navalny graffiti to get snowbanks removed quickly; Mordashov wealth could float entire Russian budget for 2 weeks; new oligarch-funded school to open this year; OPEC deal pushing up US production; Gazprom warns Europe of shortages and price hikes.