King Salman of Saudi Arabia called for “coexistence among all the region’s peoples” and endorsed President Trump’s Middle East diplomacy just days after the signing of historic agreements between Israel and two other Gulf Arab states. “Peace in the Middle East is our strategic option,” the oil-rich monarch told the United Nations General Assembly. ”And we will spare no effort to work together towards achieving a bright future where peace, stability, prosperity, and coexistence among all the region’s peoples prevail.” His recorded comments seemed to indicate that Saudi Arabia approves of the recent normalization of ties between Israel and two...