The threat of U.S. withdrawal has prompted countries around the world — from Germany to South Korea — to talk about building their own nuclear arsenals.

MOSCOW, April 8 (Reuters) - Former Russian president Dmitry Medvedev said on Tuesday that more countries would get nuclear weapons in the coming years, blaming the West for pushing the world ...

The containment rested on the US extending its nuclear umbrella to convince allies they need not seek the weapons themselves. Denis Healey, the late British minister, quipped that US nuclear ...