Nato 75th anniversary summit begins in Washington

Ukraine is high on the agenda at the three-day summit in Washington. In his opening remarks, President Biden pledged more air defence systems for Kyiv. Meanwhile Democratic party politicians have held meetings over concerns about Mr Biden's fitness for re-election.

Also in this podcast, a Russian court issues an arrest warrant for opposition figure Yulia Navalnya, the trial of actor Alec Baldwin begins in New Mexico, and how Denmark is encouraging tourists to go green.