vice presidents, judges and Adjudicatory Committee members of the Supreme People's Court, and the president of the Military Court; (13) appointing or removing, based on recommendations by the procurator general of the Supreme People's Procuratorate, deputy procurators general, procurators and Procuratorial Committee members of the Supreme People's Procuratorate, and the chief procurator of the Military Procuratorate; and approving the appointment or removal of chief procurators of the people's procuratorates of provinces, autonomous regions and cities directly under central government jurisdiction; (14) deciding on the appointment or removal of plenipotentiary representatives abroad; (15) deciding on the ratification or abrogation of treaties and important agreements concluded with foreign countries; (16) stipulating systems of titles and ranks for military and diplomatic personnel and other field-specific title and ranking systems; (17) stipulating national medals and titles of honor and deciding on their conferment; (18) deciding on the granting of special pardons; (19) when the National People's Congress is out of session, in the event of an armed attack on the country or in fulfillment of international treaty obligations concerning common defense against aggression, deciding on declaring a state of war; (20) deciding on national or local mobilization; (21) deciding on entering a state of emergency nationwide or in particular provinces, autonomous regions or cities directly under central government jurisdiction; and (22) other functions and powers accorded to it by the National People's Congress. Article 68 The chairperson of the National People's Congress Standing Committee shall preside over the work of the National People's Congress Standing Committee and convene meetings of the National People's Congress Standing Committee. The vice chairpersons and the secretary general shall assist the chairperson in his or her work. The chairperson, vice chairpersons and the secretary general constitute a Council of Chairpersons, which handles the important day-to-day work of the National People's Congress Standing Committee. Article 69 The National People's Congress Standing Committee shall be responsible to the National People's Congress and shall report to the Congress on its work. Article 70 The National People's Congress shall establish an Ethnic Affairs Committee, a Constitution and Law Committee, a Financial and Economic Committee, an Education, Science, Culture and Public Health Committee, a Foreign Affairs Committee, an Overseas Chinese Affairs Committee and such other special committees as are necessary. When the National People's Congress is out of session, all special committees shall work under the leadership of the National People's Congress Standing Committee. The special committees shall research, discuss and draw up relevant proposals under the leadership of the National People's Congress and the National People's Congress Standing Committee. Article 71 When the National People's Congress and the National People's Congress Standing Committee deem it necessary, they may organize investigation committees on specific issues and, based on investigation committee reports, adopt appropriate resolutions. When an investigation committee is conducting an investigation, all state organs, social organizations and citizens concerned shall have the obligation to provide the committee with the necessary data. Article 72 Deputies to the National People's Congress and members of the National People's Congress Standing Committee shall have the power, in accordance with procedures prescribed by law, to submit proposals within the scope of the respective functions and powers of the National People's Congress and the National People's Congress Standing Committee. 13