United States-Israel Missile Defense Cooperation Act of 2013 - Authorizes the President, acting through the Secretary of Defense (DOD) and the Secretary of State, to provide assistance, upon request of the Israeli government, for the procurement of the Iron Dome anti-rocket defense system, as well as authorization for cooperation on the development, maintenance, enhancement, and sustainment of the David's Sling, Arrow, and Arrow 3 anti-missile defense systems, for the purposes of intercepting rockets, missiles, and projectiles launched against Israel.