Renewed tensions between Britain and the Boers peaked in 1899 when the British demanded voting rights for the 60,000 foreign whites on the Witwatersrand. Until that point, President Paul Kruger's government had excluded all foreigners from the franchise. Kruger rejected the British demand and called for the withdrawal of British troops from the borders of the South African Republic. When the British refused, Kruger declared war. This Second Anglo-Boer War, also known as the South African War lasted longer than the first, with British troops being supplemented by colonial troops from Southern Rhodesia, Canada, India, Australia and New Zealand. It has been estimated that the total number of British and colonial troops deployed in South Africa during the war outnumbered the population of the two Boer Republics by more than 150,000.