The fourth annual report of the Compliance Committee to the Conference of the Parties serving as the meeting of the Parties to the Kyoto Protocol covers activities undertaken from 10 October 2008 to 13 October 2009. The report provides a summary of the further consideration by the enforcement branch of the question of implementation with respect to Greece and its consideration of two questions of implementation with respect to Croatia. It also contains information on discussions by the facilitative branch on provisions relating to facilitation, and discussions of the plenary on consistency in the review process.