Does my right hon. Friend agree that the South African Government could not have run the risk of releasing Mr. Mandela—his release is welcome—if President Gorbachev had not withdrawn his support for militant revolutionary forces in central and southern Africa? Will he congratulate my right hon. Friend the Prime Minister on the contribution that she and former President Reagan made by standing up to the imperialist advance in Africa which has been halted? Thanks to its being halted, the chances of fruitful dialogue have increased.