In exceptional and duly justified circumstances, and without prejudice to Article 2(3) of this Regulation, in order to ensure the coherence and effectiveness of Union financing or to foster regional or trans-regional cooperation, the Commission may decide, within the multiannual indicative programmes in accordance with Article 15 of this Regulation or the relevant implementing measures in accordance with Article 2 of Regulation (EU) No 236/2014, to extend the eligibility of actions to countries and territories which otherwise would not be eligible for financing pursuant to Article 1 of this Regulation, where the action to be implemented is of a global, regional, trans-regional or cross-border nature.