Jonathan Beale, BBC's defence correspondent, and Tim Marshall, journalist and author of Prisoners of Geography, dive into the escalating geopolitical tensions in the Arctic. They discuss Donald Trump's controversial interest in Greenland and its strategic implications for U.S. national security amidst Russian and Chinese ambitions. The conversation shifts to the effects of climate change on trade routes and the urgency for collaboration between nations. The duo also highlights the risks of military actions and the necessity of shared scientific knowledge to tackle severe climate impacts.