Just how far will the U.S.-Saudi fallout over the disappearance of journalist and dissident Jamal Khashoggi go? There is a lot at stake: The United States needs Saudi Arabia to balance oil markets, combat Iran, fight terrorism and purchase arms. Saudi Arabia, in turn, needs American weapons and defense cooperation, access to U.S. technology and investment, and U.S. protection against a resurgent Tehran. It all means that the geopolitical ties that bind Riyadh and Washington are likely to remain tight. But with congressional rhetoric hot and media outrage at a fever pitch, American repercussions against the kingdom are likely in some form -- though the Saudis aren't devoid of their own courses of action either....