Kaunda of Zambia and President Julius Nyerere of Tanzania threatened to leave the Commonwealth if Britain continued with the arms sales to South Africa. When British Prime Minister Edward Heath visited Ottawa in December 1970, his meetings with Trudeau went badly. In what was described as a "no holds-barred" style, Trudeau told Heath that the British arms sales to white supremacist South Africa were threatening the unity of the Commonwealth. At a Commonwealth summit in Singapore between 14 and 22 January 1971, Trudeau argued that apartheid was not sustainable in the long run given that the black population of South Africa vastly outnumbered the white population, and it was extremely myopic for Britain to be supporting South Africa, given that majority rule in South Africa was inevitable. However, Trudeau worked for a compromise to avoid a split in the Commonwealth, arguing that the Commonwealth needed to do more to pressure South Africa to end apartheid peacefully, saying that a "race war" in South Africa would be the worse possible way to end apartheid. The conference ended with the compromise agreement that Britain would complete its existing arms contracts to South Africa, but henceforward sell no more weapons to South Africa; ultimately the British only sold South Africa five attack helicopters. Lee Kuan Yew, the prime minister of Singapore and the host of the conference later praised Trudeau for his efforts at the Commonwealth summit to hold together the Commonwealth despite the passions caused by the South African issue. In contrast to South Africa, Trudeau was more forceful on the white supremacist government of Rhodesia (modern Zimbabwe), saying during a visit to Jamaica about the question of accepting white refugees from Rhodesia: "I'm certainly not panting to have this immigration movement take place...If they're liberals, white liberals, they should stay and have nothing to fear after Rhodesian independence. If they're racist, why shouldn't you [Jamaica] receive them instead of us?" Israel In November 1978, the Israeli Prime Minister Menachem Begin visited Canada and during a speech on 12 November 1978 to a Jewish group in Toronto called upon Canadian Jews to lobby to have Canada move its embassy from Tel Aviv to Jerusalem, saying that Jerusalem was the true capital of Israel, and that Jews should vote in the 1979 election for the candidates who wanted the Canadian embassy in Jerusalem. Trudeau saw Begin's speech as interference in Canada's internal politics,