Russian forces proceeded to violate that agreement and, after taking additional territory, halted—leaving an uneasy truce in ...

President Donald Trump wants to make Ronald Reagan’s long-ridiculed Star Wars missile defense program from the 1980s a reality. And he insists that new tech can finally make it happen.

Lithuania will become the first country in the European Union to officially leave a multilateral arms regulation agreement ...

Among other withdrawals from bilateral accords, the United States in 2002 left the Anti-Ballistic Missile Treaty, prompting the end of that agreement with Russia. In 2019, the two powers also ...