Speculation is swirling about a rift in the Kremlin after Russian Foreign Minister Sergey Lavrov’s notable absence from high-level meetings following the failed Trump-Putin summit, and reports that Lavrov has been sidelined from leading Russia’s G20 delegation. Russian and Western sources tie the tension to Lavrov’s uncompromising stance during a call with US Secretary of State Marco Rubio, which reportedly contributed to the collapse of summit plans.