Otto Lagerfeld held in bleak camp in Verkhoyansk for four years of First World War, show contemporary documents.
The strategic crossing to be built on permafrost in jeopardy due to funds needed for Crimea.
Alrosa to announce timetable within two weeks, with exchange likely open by 2016.
Fears for plan to stimulate Russian economy via major infrastructure links to Asia and Europe as Beijing announces rival scheme.
Two Chinese companies compete to build a permafrost crossing of the Lena River.
Couple died on back seat of Toyota RAV4, but suspicion for tragedy focuses on 'jealous' ex-Ukraine rebel fighter spouse.
Russian government denies removal of director of Opera and Ballet Theatre was censorship.
Back in Soviet times, Akademgorodok was known as one of the best places to live, a home to some of the USSR's greatest scientists.