The Parties through their competent authorities shall provide assistance through exchange of information that is foreseeably relevant to the administration and enforcement of the domestic laws of the Parties concerning the taxes covered by this Agreement, including information that is foreseeably relevant to the determination, assessment, enforcement or collection of tax with respect to persons subject to such taxes, or to the investigation of tax matters or the prosecution of criminal tax matters in relation to such persons. A requested Party is not obliged to provide information which is neither held by its authorities nor in the possession of or obtainable by persons who are within its territorial jurisdiction. The rights and safeguards secured to persons by the laws or administrative practice of the requested Party remain applicable. The requested Party shall use its best endeavours to ensure that the effective exchange of information is not unduly prevented or delayed.