Turkey: Police arrest the mayor of Istanbul

Police in Turkey have arrested the popular mayor of Istanbul, just days before he was due to be selected as an opposition presidential candidate. Ekrem Imamoglu, who's seen as one of President Erdogan's strongest rivals, has been accused of corruption and aiding a terrorist group. Dozens of politicians, journalists and businessmen have also been arrested and a four-day ban on protests has been imposed in Istanbul. We'll have the latest.

President Zelensky says he's expecting to speak on the phone to President Trump later today -- as plans for peace in the Ukraine appear to have stalled. Earlier he accused Russia's President Putin of breaking a promise of a 30 day pause on attacks on Ukrainian energy facilities. Russia has accused Kyiv of launching a drone attack on an oil depot. We'll hear from two mothers in Russia about their hopes for peace.

Elsewhere in the news, trekking companies in Nepal say they are planning to use drones during this year's spring climbing season to transport food and equipment, and to remove waste from Mount Everest. But will drones spoil the beauty of this amazing place?

(Photo: Supporters of Istanbul Mayor Ekrem Imamoglu. Credit: Erdem Sahin/EPA-EFE/REX/Shutterstock)