据伊通社（IRNA）：伊朗称在北印度洋发射巡航导弹打击美国舰艇，启动“闪电行动”第十三阶段。

道琼斯指数7月17日（周五）开盘下跌197.40点，跌幅0.38%，报52355.57点； 标普500指数7月17日（周五）开盘下跌89.23点，跌幅1.18%，报7444.54点； 纳斯达克综合指数7月17日（周五）开盘下跌621.17点，跌幅2.40%，报25260.77点。

US media report the US has notified Israel it will deploy dozens more air-to-air refueling tankers and may broaden military action against Iran. Axios, citing Israeli officials, said Washington wants the additional tankers in the coming days to restore numbers to levels seen at the start of US-Israeli operations against Iran in late February. The US has asked Israel to accept the deployments; Prime Minister Netanyahu will make the final decision. About 30 US tankers are parked at Ben Gurion near Tel Aviv and a similar number at Ramon in southern Israel. Axios added President Trump appears inclined to escalate to force Iran to reopen the Strait of Hormuz and accept US demands on its nuclear program, and US and Israeli officials said Trump could order an escalation in coming days.