Since independence, the country has struggled to maintain unity against local insurgencies and separatist movements. Some, notably in Aceh and Papua, have led to an armed conflict and subsequent allegations of human rights abuses and brutality from all sides. The former was resolved peacefully in 2005, while the latter continues, amid a significant, albeit imperfect, implementation of regional autonomy laws and a reported decline in the levels of violence and human rights abuses since 2004. Other engagements of the army include the campaign against the Netherlands New Guinea to incorporate the territory into Indonesia, the "Konfrontasi" to oppose the creation of Malaysia, the mass killings of PKI, and the invasion of East Timor, which remains Indonesia's most massive military operation.