Under the agreement of March 1978, the country was renamed Zimbabwe-Rhodesia, and in the general election of 24 April 1979, Bishop Abel Muzorewa became the country's first black prime minister. On 1 June 1979, Josiah Zion Gumede became President. The internal settlement left control of the military, police, civil service, and judiciary in white hands, and assured whites about one-third of the seats in parliament. It was essentially a power-sharing arrangement between whites and blacks. The factions led by Nkomo and Mugabe denounced the new government as a puppet of white Rhodesians and fighting continued. The hoped for recognition of the internal settlement, and of Zimbabwe-Rhodesia, by the newly elected Conservative government of Margaret Thatcher did not materialize after the latter's election in May 1979. Likewise, despite the fact that the US Senate voted to lift sanctions against Zimbabwe-Rhodesia, the Carter administration also refused to recognise the internal settlement. While Prime Minister Thatcher clearly sympathised with the internal settlement and thought of the ZANLA and ZIPRA leaders as "terrorists", she was prepared to support a push for further compromise if it could end the fighting. Britain was also reluctant to recognise the internal settlement for fear of fracturing the unity of the Commonwealth. Thus later in 1979, the Thatcher government called a peace conference in London to which all nationalist leaders were invited.