During the massacre of at least 500,000 alleged communists in 1960s Indonesia, U.S. government officials encouraged and applauded the mass killings while providing covert assistance to the Indonesian military which helped facilitate them. This included the U.S. Embassy in Jakarta supplying Indonesian forces with lists of up to 5,000 names of suspected members of the Communist Party of Indonesia (PKI), who were subsequently killed in the massacres. In 2001, the CIA attempted to prevent the publication of the State Department volume "Foreign Relations of the United States, 1964–1968", which documents the U.S. role in providing covert assistance to the Indonesian military for the express purpose of the extirpation of the PKI. In July 2016, an international panel of judges ruled the killings constitute crimes against humanity, and that the US, along with other Western governments, were complicit in these crimes.