Question: According to whom was Yuri Izrael the  "most influential scientific adviser" to the current President of Russia?
Sentence (from "Yuri Izrael"): Yuri Antonovich Izrael (Russian: Юрий Антониевич Израэль ; 15 May 1930, Tashkent – 23 January 2014, Moscow) was a vice-chairman of the Intergovernmental Panel on Climate Change (IPCC) until September 2008, when the new bureau was elected.
Relevant evidence: Yes