Historian Nick Cullather wrote that by overthrowing Árbenz, the CIA ended up undermining its own initial goal of a stable Guatemalan government. Historian Stephen Streeter stated that while the US achieved certain strategic goals by installing the "malleable" Castillo Armas as president, it did so at the cost of Guatemala's democratic institutions. He further states that, although Castillo Armas probably would have committed the human rights violations that he did even without a US presence, the US State Department had certainly aided and abetted the process. The rolling back of the progressive policies of the previous civilian governments resulted in a series of leftist insurgencies in the countryside beginning in 1960. This triggered the Guatemalan Civil War between the US-backed military government of Guatemala and leftist insurgents, who often boasted a sizable following among the citizenry. The conflict, which lasted between 1960 and 1996, resulted in the deaths of 200,000 civilians. Though crimes against civilians were committed by both sides, 93 percent of such atrocities were committed by the US-backed military. These violations included a genocidal scorched-earth campaign against the indigenous Maya population during the 1980s. Historians have attributed the violence of the civil war to the 1954 coup, and the "anti-communist paranoia" that it generated.