John Simpson, in discussion with the BBC's unparalleled range of experts across the world, examines what Ukraine can do to win back American military support in its war with Russia, explores whether a European army could provide a bulwark against Russia and looks at how Donald Trump and Elon Musk have waded into the controversy over South Africa’s land inequality.

U.S. President Donald Trump said on Friday that his country is stopping all federal funding to South Africa, but South Africa responded by saying it would not engage in "megaphone diplomacy".

South Africa is set to host Ukraine's President Volodymyr Zelensky on a state visit, President Cyril Ramaphosa confirmed on X without giving a specific date. The invite comes at the end of a week ...