(10)Whereas within the meaning of points 2, 4 and 7 of Article 6(1)(a) of Directive 89/647/EEC, a zero weighting is applied to assets constituting claims on Zone A central governments and central banks or explicitly guaranteed by them and to assets secured by collateral in the form of Zone A central government or central bank securities; whereas, within the meaning of Article 7(1) of that Directive, the Member States may, on certain conditions, apply a zero weighting to assets constituting claims on their own regional governments and local authorities and to claims on third parties and off-balance-sheet items held on behalf of third parties and guaranteed by those regional governments or local authorities;