WATCH: Biden delivers remarks celebrating the 75th Anniversary of NATO PBS NewsHourUkraine war briefing: Nato summit opens with Patriot pledges The GuardianUkraine mourns as rescuers search the rubble of a Kyiv children’s hospital struck by a missile The Associated PressBiden pledges more aid to Ukraine, says Putin will be stopped USA TODAYJoe Biden pledges air defence systems and insists ‘Ukraine can and will stop Putin’ Sky News