 Complete the following phrase:  Each breakdown or setback during the early years of Smiths premiership prompted press speculation that Harper might replace him. In 1966, when Smith brought a working document back from the HMS Tiger talks with the British Prime Minister Harold Wilson, Harper led opposition to the terms in Cabinet, contributing to their rejection. Harper resigned from the Rhodesian Front in 1968, soon after Smith dismissed him from the Cabinet, reportedly because Harper had had an extramarital affair with a British agent. He subsequently became a vocal critic of the Prime Minister, greeting each step Smith made towards settlement with black nationalists during the 