Fresh turmoil for traders as President Trump denies he intends to fire Fed chair Jerome Powell, after floating the idea in a meeting with Republicans. Trump also says more than 150 countries will soon get letters imposing tariff rates of 10-to-15 percent, a day after sealing a deal with Indonesia. Plus the G-20 finance ministers meeting underway in South Africa with trade sharply in focus. SARB governor, Lesetja Kganyago, tells us tariffs have made policy-making more difficult. Guests include: