The Saudi Arabia-Iran stand-off — what next?

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Anybody studying the architecture of the ongoing conflicts in the Middle East should not be surprised at Saudi Arabia announcing the severing of diplomatic relations with Iran in the aftermath of the burning of the Saudi embassy in Tehran by violent protestors, who were demonstrating against the execution of Sheikh Nimr al-Nimr. In a domino effect, Gulf countries and Saudi allies broke off or downgraded their relations with Tehran, including Kuwait, the UAE and even Sudan.