101It is appropriate to point out first that, within the system of Directive 2004/83, any danger which a refugee may currently pose to the Member State concerned is to be taken into consideration, not under Article 12(2) of the directive but under (i) Article 14(4)(a) of that directive, pursuant to which Member States may revoke refugee status where, in particular, there are reasonable grounds for regarding the person concerned as a danger to security and (ii) Article 21(2) of the directive, which provides that the host Member State may — as it is also entitled to do under Article 33(2) of the 1951 Geneva Convention — refoule a refugee where there are reasonable grounds for considering him to be a danger to the security or the community of that Member State.