International organisations, organs and officials thereof and members of a diplomatic or consular mission of a third State, being present in one of the States, are not entitled, in the other State, to the reductions or exemptions from tax provided for in Articles 10, 11 and 12 in respect of the items of income dealt with in these Articles and arising in that other State, if such items of income are not subject to a tax on income in the first-mentioned State.
