Kammala jumla mai zuwa: Quezada ya zama gwarzo na kasa ta hanyar taimakawa wajen kawo karshen
yakin basasa da ya lalata kasarsa tsawon shekaru 36. Ya jagoranci kungiyoyi biyu da suka taka muhimmiyar rawa wajen samar da yarjejeniyar zaman lafiya: Hukumar Sulhu ta Kasa, wacce ya jagoranci daga 1987 zuwa 1993, da Majalisar Kungiyar Jama'a, wacce ya jagoranci daga 1994 zuwa 1996. Ya kuma kasance mai sasantawa na hukuma tsakanin gwamnati da mayakan kungiyar National Revolutionary Unit (1990-1994). An kashe mataimakinsa a tsarin zaman lafiya, Bishop Juan Gerardi, a watan Afrilu na 1998.