Jonn Elledgem, columnist and author, sheds light on the arbitrary nature of borders in his latest book. Ivan Vad-Petersen discusses Norway's evolving security concerns along its border with Russia, particularly after NATO expansions. Jennifer Ballantyne-Pereira explores the fraught history between Spain and Gibraltar, emphasizing how Brexit has altered relationships. Meanwhile, Rob Hubert tackles the complexities of maritime boundaries in Arctic waters, discussing how these disputes could be further complicated by climate change.