By Timothy Gardner, David Brunnstrom and Ju-min Park WASHINGTON/SEOUL (Reuters) -The U.S. Department of Energy has designated ally South Korea a "sensitive" country, a spokesperson said on Friday, after the South Korean president briefly imposed martial law and amid talk of Seoul potentially developing nuclear weapons.

South Korea's foreign minister told the country's legislature Wednesday that developing nuclear weapons is not off the table

The U.S. Department of Energy (DOE) has designated South Korea as a sensitive country, a move linked to concerns over nuclear proliferation and recent political turmoil in Seoul. The classification, made in January

SEOUL (Reuters) - Russian Deputy Foreign Minister Andrei Rudenko is visiting North Korea, North Korean state media KCNA said on Saturday.

Russian Deputy Foreign Minister Andrei Rudenko has arrived in North Korea, as reported by state media KCNA. His visit follows U.S. claims that thousands of North Korean troops are fighting alongside Russian forces

N. Korea's top diplomat meets Russia's vice foreign minister North Korea's Foreign Minister Choe Son-hui (sitting, back R) meets with a Russian delegation headed by Deputy Foreign Minister Andrey Rudenko (sitting,