On January 22, 2021, the Treaty on the Prohibition of Nuclear Weapons (TPNW) entered into force. The legally-binding, multilateral treaty prohibits the development, production, possession, stockpiling, testing, and use of nuclear weapons under international law, thus closing an important legal gap (Immenkamp, 2021). Currently, there are 86 signatories and 55 state parties. Unsurprisingly, none of the nine nuclear-armed states (USA, United Kingdom, France, Russia, China, India, Pakistan, Israel, and North Korea) and none of the members of the North Atlantic Treaty Organisation (NATO) have signed the TPNW. Germany has neither ratified nor signed the TPNW. In this briefing we sketch out short- and medium steps, which the government can take to support the TPNW and nuclear disarmament already during the next legislation.