(31)Where an adverse event or development extends beyond a single Member State or has other cross-border implications, for example if a financial instrument is admitted to trading on different trading venues in a number of different Member States, close consultation and cooperation between competent authorities is essential. ESMA should perform a key coordination role in such a situation and should try to ensure consistency between competent authorities. The composition of ESMA, which includes representatives of competent authorities, will assist it in the performance of such a role. In addition, competent authorities should have power to take measures where they have an interest in intervening.