The independence of Mozambique and Angola in 1975 challenged white minority rule in Southern Africa. Firstly, the independence wars in Angola and Mozambique demonstrated that even with great military resources it was virtually impossible for a small white minority to guarantee the safety of its members, let alone to exert control over a mobilised and agitated population outside of major power centres. The downfall of Portuguese colonial rule gave hope to black liberation struggles in the then apartheid South Africa and Rhodesia. Second, in both countries revolutionary socialist movements gained power. These movements had been cooperating with the black liberation movements in South Africa and Rhodesia, and continued to openly support them, offering them a safe haven from where they could coordinate their operations and train new forces. As President Machel put it in a speech in 1975: "The struggle in Zimbabwe is our struggle".