The US Federal Reserve has raised interest rates by 0.75 percent for the third time in a row, bringing America's borrowing costs to the highest level since 2008. Like other central banks, the Fed hopes to tame inflation, which is hovering near 40-year highs. Also in the show: the German government nationalises gas giant Uniper, and our Tunis correspondents Lilia Blaise and Fadil Aliriza report on food shortages in Tunisian shops.