Artikel 18

1. The offences set forth in Article 15 sub-paragraphs 1 a) to c) shall be deemed to be included as extraditable offences in any extradition treaty existing between any of the Parties before the entry into force of this Protocol. Parties undertake to include such offences in every extradition treaty to be subsequently concluded between them.
2. When a Party which makes extradition conditional on the existence of a treaty receives a request for extradition from another Party with which it has no extradition treaty, the requested Party may, at its option, consider the present Protocol as the legal basis for extradition in respect of offences as set forth in Article 15 sub-paragraphs 1 a) to c).
3. Parties which do not make extradition conditional on the existence of a treaty shall recognise the offences set forth in Article 15 sub-paragraphs 1 a) to c) as extraditable offences between them, subject to the conditions provided by the law of the requested Party.
4. If necessary, offences set forth in Article 15 sub-paragraphs 1 a) to c) shall be treated, for the purposes of extradition between Parties, as if they had been committed not only in the place in which they occurred but also in the territory of the Parties that have established jurisdiction in accordance with Article 16 paragraph 1.