![McConnell to step down as US Senate Republican leader - podcast episode cover](http://ichef.bbci.co.uk/images/ic/3000x3000/p09kz1gg.jpg)
Episode description
The US Senate's longest-serving Republican leader, Mitch McConnell, has announced he's stepping down from his leadership position in November. Also: US reacts to breakaway region of Transnistria asking Russia for "protection from Moldova", and the scientist who produced an award-winning music video to illustrate his PhD on kangaroos.