Imports for project execution now require specified government certificates confirming necessity and project approval at customs clearance. The amendment narrows exemption scope to goods imported for execution of projects financed by the United Nations or an international organisation and requires specified certificates at customs clearance: for UN financed approved projects, a certificate from an officer not below Deputy Secretary in the Ministry of Finance (Department of Economic Affairs); for projects financed by the World Bank, Asian Development Bank or other international organisations approved by the Government of India, a certificate from the executive head of the Project Implementing Authority countersigned by a Joint Secretary in the concerned Line Ministry; and where implementation is by a State/UT, countersignature by the Principal Secretary or Secretary (Finance) of that State/UT. The Explanation defines 'international organisation' and 'Line Ministry.'