Israeli Prime Minister Benjamin Netanyahu is paying a visit to Washington looking for clarification. Despite his long association with Donald Trump, and the overtures that Trump's election campaign made toward Israel, Netanyahu is still uncertain about many aspects of the new U.S. administration's policies toward the Middle East. The premier, who arrived Wednesday to a warm welcome from the White House, knows that despite the most generous of guarantees by Washington, the security of his nation depends as much on its pragmatic relationships with other Middle Eastern states as on the support of its longtime ally. It was Netanyahu's own reference to those relationships that prompts the more intriguing questions about the era to come in the Middle East.