LONDON (Reuters) – The United States and Saudi Arabia appear to have reached an understanding: Washington will reduce or eliminate Iran’s oil export revenues and in return Riyadh will guarantee oil supplies and stabilize prices. FILE PHOTO: General view of Aramco tanks and oil pipe at Saudi Aramco’s Ras Tanura oil refinery and oil terminal in Saudi Arabia May 21, 2018. Picture taken May 21, 2018. REUTERS/Ahmed Jadallah/File Photo The basic deal is well understood by policymakers in both countries, with U.S. President Donald Trump repeatedly emphasizing his great personal relationship with the Saudi king and crown prince. But strong personal relationships between the leaders and agreement on the overall deal obscure disagreement on some key details, not least the desirable level for oil prices. Saudi Arabia and its allies believe prices should be stabilized around $75 a barrel. Trump, meanwhile, clearly thinks they should be stabilized at a […]