 A year later , in 1963 , FRELIMO set up headquarters in Dar es Salaam , Tanzania , under the leadership of sociologist Eduardo Mondlane , and began to call for independence from <unk> two years of organisation and failing political manoeuvres in an attempt to seek a peaceful independence , Mondlane began in 1964 a campaign of guerrilla warfare in an attempt to achieve independence for Mozambique . 
