In 2011, the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) took further important steps towards fulfilling its mandate to promote the Treaty’s entry into force and establish the verification regime. International support for the Treaty continued to increase with Ghana and Guinea ratifying the Treaty, bringing the number of ratifications up to 155. As an Annex 2 State which must ratify the Treaty before it can enter into force, the decision by the Parliament of Indonesia on 6 December to ratify the Treaty was especially significant. Of the 44 States listed in Annex 2 to the Treaty, 35 had ratified as of 31 December 2011. Once Indonesia has completed its ratification process, only eight Annex 2 States will still need to ratify. A total of 182 States had signed the CTBT by the end of 2011.