The treaty would be great, if we forget and forgive some missteps of the WHO, besides this point. This is the single most important point. Who in the hell is going to actually enforce the treaty? Most of the UN security council are permanent members who all have some ideological bent against each other. Not to mention, the US doesn't really allow itself to be accountable to international courts. Why would any other country? An international treaty is only effective if it can be unilaterally enforced regardless of the offending country. Not saying the US is the only bad guy here, but I know for a fact the US doesn't abide by international courts. Chances are Russia and China might say the same.