Assessing the solutions to tobacco control's funding gap problem.

Since its entry into force in February 2005, the WHO Framework Convention on Tobacco Control (FCTC) has had many significant achievements. It is one of the most widely ratified treaties within the United Nations; its Conference of the Parties has adopted many high-quality implementation guidelines, and implementation of the policy guidance in the treaty and its guidelines have decreased tobacco consumption and prevalence. Despite the effectiveness of these measures, however, FCTC implementation has been highly uneven across countries.