US warns Russian invasion would destabilise region
Global News Podcast - A podcast by BBC World Service
The US secretary of state has urged Moscow to formally announce that it will not invade, while the Kremlin has warned of a "military-technical" response if its demands are not met. Also: Donald Trump has been ordered to give evidence under oath to a state investigation into alleged fraud at the former president's family business, and what can the sounds of marine life tell us about climate change?