Panama’s foreign minister has called on a group of opposition lawmakers visiting China to deliver a firm message defending the country’s sovereignty, as tensions over a wave of detentions of Panamanian-flagged vessels show no signs of easing. Javier Martinez-Acha Vasquez said on Monday that the lawmakers should relay a clear message to their Chinese counterparts on Panama’s behalf. “I can only suggest that you convey that Panama respects China, but Panama first respects the Constitution of our..