Dr Jack Watling is joining us again on the situation in Ukraine as the battles resume with improved weather on the ground, and a long summer of warfare seeming to be in store.
Jack is from New Zealand originally, and is the senior research fellow for land warfare at the Royal United Services Institute (RUSI), the world's oldest and the UK's leading defence and security think tank.
He's won international media awards for his analysis. And he has spent periods of his time since this war began on the ground with the armed forces in Ukraine.