Defense economics derives from and is embedded in the multi-dimensional array of issues each country must address when providing for its national security. Applying economic concepts and methods, it attempts to evaluate this great diversity of security related questions, and to understand how...

President Vladimir Putin escalated Russia's war on Ukraine in September 2022, announcing a partial mobilisation and repeating his threat to use nuclear weapons. But what really ended efforts to bring about peace - which had continued since the 24 February invasion - was the proclaimed annexation...

Since February 2022, Ukraine has been defending itself against yet another Russian war of aggression. Now that immediate support - military, diplomatic, financial and humanitarian - for Ukraine has improved, the country’s long-term security needs to be addressed. Looking ahead, security...

Direct negotiations on a ceasefire in Russia's war against Ukraine broke down within just a few months. Today, Moscow and Kyiv are pursuing diplomatic initiatives in order to shape the international context of the war in their favour. Russia’s war diplomacy aims to weaken the "collective West"...

Previous analyses of arms races and proliferation are integrated and extended, building from a treatment of the behavioral foundations of weapons acquisitions to a general theory of arms races, with implications for the role of negotiations, the balance of power, the timing of crises, and...