Defending Israel's QME Act of 2017 This bill amends the Arms Export Control Act to require that a determination relating to the sale or export of major defense equipment to a country in the Middle East other than Israel include an assessment of: (1) Israel's ability to defend itself against military threats from regional non-state actors, (2) the risk posed by the sale or export of a subsequent unauthorized transfer or proliferation of the equipment for use against Israel, and (3) countermeasures available to Israel to defend against such unauthorized transfer or proliferation. The President shall seek to consult with appropriate Israeli government officials for information regarding Israel's qualitative military edge before making a determination that a sale or export of the defense articles or services will not adversely affect Israel's qualitative military edge.