International security is inherently a secretive business. Governments and militaries like to hide their capabilities and plans from their rivals. Yet in the post-Cold War years, states began to become more transparent about their military postures, aiming to create a new sense of international cooperation and openness. This process has …

On 9 March, South Koreans voted a conservative, Yoon Suk-yeol, into the presidency to replace the left-leaning Moon Jae-in. Yoon has taken a harder rhetorical line than his predecessor toward Pyongyang. But a dramatic shift in North Korea policy is unlikely. South Korea is changing political direction. After five years …

Ukrainian forces destroyed parts of a Russian armoured column as it tried to cross a river in the Donbas region, video from Ukraine’s military showed on Friday, as the Ukrainian defence minister predicted many weeks of grinding fighting ahead. Ukrainian forces have driven Russia from the second-largest Ukrainian city of …