The first international voice to support the charge of genocide against the Government of Sri Lanka under international law was raised by Human Rights Watch and it has advocated and published the details in December 2009. Leading American expert in international law, Professor Francis A. Boyle hold an emergency meeting with U.N. Secretary-General Ban Ki-Moon to urge to stop Tamil genocide by providing the evidence of crimes against humanity, genocide against Tamils and the international community's failure to stop the slaughter of Tamil civilians in Sri Lanka.