http://www.google.com.br/search?hl=en&safe=active&sa=X&ei=Tb...

sugestão, se a certificação florestal mencionada, ou outros assuntos do texto (se for o caso), forem sujeitos a Tratados Internacionais e assemelhados.
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ACCESSION: see Ratification. ACCESSION is the usual method by which a State, which has not taken part in the negotiations or signed the treaty, may subsequently consent to be bound by its terms. The treaty may stipulate accession by certain States. In that case, these States have a right TO ACCEDE TO the treaty. ACCESSION may also require an invitation to accede decided by the Committee of Ministers, upon request of the State interested. In general, ACCESSION is permitted after the entry into force of the treaty.

Ratification: Ratification is an act by which the State expresses its definitive consent to be bound by the treaty. Then, the State Party must respect the provisions of the treaty and implement it.

http://conventions.coe.int/Treaty/EN/v3Glossary.asp#Ratifica...
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Georgia: Compliance with commitments and obligations - Regular report prepared by the Directorate General of Democracy and Political Affairs (March 2008)
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B. Outstanding conventions

55. The ACCESSION COMMITMENT of Georgia to sign and ratify the European Charter for Regional or Minority Languages still remains. The deadline for this commitment expired in September 2005. Despite the hopes in 2007 that the Charter would be signed and subsequently ratified by the Parliament in 2007, this has not happened as yet. It is now expected that discussions on the signature of this Convention would resume after the upcoming parliamentary elections. The delays are apparently due to the still pending (...)

90. Georgia should fulfill without further delay its ACCESSION COMMITMENT to sign and ratify the European Charter for Regional or Minority Languages. Further prompt efforts, in view of the signature and subsequent ratification are expected after the elections of the new Parliament.
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http://www.nato.mfa.gov.ge/index.phplang_id=ENG&sec_id=141&i...
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HTH.
beatriz souza

Another suggestion

commitment to comply with forest certification principles

The expanded form is needed in this context.
You 'adhere to' principles, vs. 'comply with' laws. 'Obey' can be used with both principles and laws.