DR Congo political shake-up: Senate leader resigns as Kabila's influence wanes

The Senate president in DR Congo resigns after colleagues file a motion of no confidence against him. He's the latest Kabila-era leader to step out of the picture. We bring you more from our correspondent. Also, Congolese and international rights groups urge the US to reinstate sanctions on Dan Gertler, an Israeli diamond tycoon accused of obtaining corrupt mining deals in the DR Congo. We speak to Margot Mollat du Jourdin from the NGO Global Witness. And the UN warns that refugees in the volatile Tigray region of Ethiopia are facing an "extremely alarming" situation.