U.S.-Israel Anti-Killer Drone Act of 2023 This bill increases the authorization of appropriations for the Department of Defense in carrying out research, development, test, and evaluation activities, on a joint basis with Israel, to establish capabilities for countering unmanned aerial systems (UAS). The bill also requires DOD to report to Congress on the status of U.S.-Israeli cooperation to counter UAS capabilities and to provide an assessment of the UAS threat to the United States and Israel from Iran and associated proxies of Iran.