Judd Devermont of the Center for Strategic and International Studies talks to CNN's Lynda Kinkade about Zambian president Edgar Lungu, who has deployed the military amid pre-election violence.

At least 30 corpses have washed up on the Sudanese banks of a river that abuts Ethiopia's northern region of Tigray, according to two Ethiopian refugees and four Sudanese witnesses who told Reuters on Monday they had retrieved the bodies.