The US national security adviser, Jake Sullivan, has reportedly held talks with aides to Russia’s president, Vladimir Putin, with the aim of reducing the risk that the war in Ukraine could spill over or escalate into a nuclear conflict.
The Wall Street Journal said the senior White House figure had held confidential conversations in recent months with the Kremlin aide Yuri Ushakov and Russian security council secretary, Nikolai Patrushev, Sullivan’s counterpart, that were not made public.
