moscow russia next ambassador washington anatoly antonov former defense official subject european sanction role conflict ukraine kremlin announce monday antonov take sergei kislyak whose contact members president donald trump campaign team make central figure row russian influence u.s. presidential election incoming ambassador 62 diplomat train currently deputy foreign minister 2011 2016 serve deputy defense minister period coincide moscow annexation ukraine crimea peninsula european union add two years ago list officials subject ukraine-related sanction cite involvement support deployment russian troop ukraine since become deputy foreign minister last year antonov act liaison foreign ministry military arm force grow influence foreign policy especially since moscow launch military operation syria person deal antonov say tough military-style man name outgo ambassador kislyak emerge relation several trump associate special counsel congressional panel investigate russian meddle possible tie trump campaign u.s. attorney general jeff sessions recuse march matter connect investigation fbi follow admission talk russian envoy michael flynn former white house national security adviser force resign february become know fail disclose content conversations kislyak mislead vice president meet jar kushner white house advisor trump son-in-law meet kislyak two occasion 2016 white house disclose kushner also phone call kislyak april november 2016 reuters report moscow deny interference trump say campaign collude russia russia name replacement sergei kislyak envoy washington