22:00Biggest Russian bombardment on Ukraine yetNuclear security pact signed between US UK and AustraliaBBC Radio 4 Duration: 45 minutes Thu 16th Sep 2021, 22:00 on BBC Radio 4 LWAvailable for over a yearListen nowIn-depth reporting, intelligent analysis and breaking news from a global perspectiveGenresNewsBrandBiggest Russian bombardment on Ukraine yet Source: BBC Online