Paris, France—World leaders hailed “real progress” in Syria on Friday, but fresh air strikes showed the fragility of the week-old truce as the opposition cast doubt on its attendance at talks next week in Geneva. Warplanes struck a key rebel bastion east of the Syrian capital for the first time since the United States-Russia-brokered truce — which excludes the fight against jihadists — began last weekend, a monitor said. “Two air strikes hit the edge […]