By Humeyra Pamuk SDE BOKER, Israel (Reuters) -The top diplomats of the United States and four Arab countries convened in Israel on Monday in a display of unity against Iran but also used the rare summit to press their host to revive long-stalled peacemaking with the Palestinians. Concluding two days of discussions at a desert retreat where its founding father David Ben-Gurion is buried, Israel said the event would be repeated and expanded as it builds up commercial and security ties with like-minded Sunni Arab states. “This new architecture – the shared capabilities we are building – intimidat…