With Israel set to host an unprecedented meeting of the national security advisors of the US, Russia, and Israel, this week’s efforts by German FM Heiko Maas and Japanese PM Shinzo Abe to mediate between the US and Iran could prove to be but a sideshow. The meeting of the national security advisors, against the backdrop of Syrian and Russian forces pummeling Idlib, the last major stronghold of Syrian rebels, takes on added significance with strains emerging in relations between Moscow and Tehran.