In practice, important sources of climate finance may also be domestic. The key definitional issue is that climate change finance has greenhouse gas mitigation or adaptation as an explicitly stated objective, or as a main outcome (i.e. reduction or sequestration of greenhouse gas emissions or reducing vulnerability to inevitable climate change). Climate change finance may also support climate change reporting as required under the Convention, e.g. preparation of national greenhouse gas inventory reports, national communications or biennial reports, as well as mitigation- or adaptation capacity building more generally.