Trading of insults, a cancelled joint press conference and the refusal to sign a draft UN resolution condemning Russia’s aggression. We examine the deepening feud between Ukraine and the US and what it means for the prospect of peace. We’re also in Berlin as Germany prepares to head to the polls. Then: a look ahead to midterm elections in the Philippines and a conversation about Birkenstock and artistic copyright. Plus: theatre news, Design Biennale Rotterdam and ‘What We Learned’.