A letter President Trump wrote to Iran's supreme leader in an attempt to jump-start talks over Tehran's rapidly advancing ...

Ukraine surrendered its Soviet-era nuclear stockpile more than three decades ago and experts have questioned whether Kyiv ...

Polish President Duda urges the US to transfer nuclear weapons to Poland, citing NATO's need to adapt its deterrence strategy ...

Radioisotope thermoelectric generators do not rely on chemical reactions like the batteries in your phone. Instead, they rely on the radioactive decay of elements to produce heat and eventually ...

Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news provider, reaching billions of people worldwide every day. Reuters provides business, financial ...