WASHINGTON—State Department diplomat Nelson Milstrand, who appeared on CNN last week and offered an informed, thoughtful analysis implying that Israel could perhaps exercise more restraint toward Palestinian moderates in disputed territories, was asked to resign Tuesday. “The United States deeply regrets any harm Mr. Milstrand’s careful, even-tempered, and factually accurate remarks may have caused our democratic partner in the Middle East,” Secretary of State Hillary Clinton said in an unequivocal condemnation of the veteran foreign-service officer’s perfectly reasonable statements. “U.S. policy toward Israel continues to be one of unconditional support and fawning sycophancy.” Milstrand, 63, will reportedly appear at an AIPAC conference to offer a full apology as soon as his trial concludes and his divorce is finalized.