Prince Sihanouk was surprisingly acquiescent about the whole affair. He was under pressure from the U.S. to reopen diplomatic ties and to act militarily against the sanctuaries; from the North Vietnamese, who now received 80 percent of their supplies for their southernmost operations through Sihanoukville; and from the fledgling Chinese-supported Khmer Rouge (approximately 4,000 men). Sihanouk felt that this was a propitious moment to swing back to the right. By the summer he created a right-wing Government of National Salvation under General Lon Nol and he suspended North Vietnamese arms shipments through his ports.