(1) Subject to the provisions of this Act, the Central Government shall take all such measures as it deems necessary or expedient for the purpose of preventing and combating abuse of narcotic drugs and psychotropic substances and the illicit traffic therein [and for ensuring their medical and scientific use].
(2) In particular and without prejudice to the generality of the provisions of sub-section (1), the measures which the Central Government may take under that sub-section include measures with respect to all or any of the following matters, namely:--
(a) coordination of actions by various officers, State Governments and other authorities--
(i) under this Act, or
(ii) under any other law for the time being in force in connection with the enforcement of the provisions of this Act;
(b) obligations under the International Conventions;
(c) assistance to the concerned authorities in foreign countries and concerned international organisations with a view to facilitating coordination and universal action for prevention and suppression of illicit traffic in narcotic drugs and psychotropic substances;
(d) identification, treatment, education, after care, rehabilitation and social re-integration of addicts;
[(da) availability of narcotic drugs and psychotropic substances for medical and scientific use;]
(e) such other matters as the Central Government deems necessary or expedient for the purpose of securing the effective implementation of the provisions of this Act and preventing and combating the abuse of narcotic drugs and psychotropic substances and illicit traffic therein.
(3) The Central Government may, if it considers it necessary or expedient so to do for the purposes of this Act, by order, published in the Official Gazette, constitute an authority or a hierarchy of authorities by such name or names as may be specified in the order for the purpose of exercising such of the powers and functions of the Central Government under this Act and for taking measures with respect to such of the matters referred to in sub-section (2) as may be mentioned in the order, and subject to the supervision and control of the Central Government and the provisions of such order, such authority or authorities may exercise the powers and take the measures so mentioned in the order as if such authority or authorities had been empowered by this Act to exercise those powers and take such measures.