[kim jong un]KCNA/Reuters MOSCOW (Reuters) - Russia is seriously worried by North Korea's declared readiness to use its nuclear weapons, Kremlin spokesman Dmitry Peskov said on Friday. "This raises pretty serious concerns," Peskov told a teleconference with journalists. "We hope that all countries in the region will maintain restraint and a balanced attitude." North Korean leader Kim Jong Un has ordered his country to be ready to use its nuclear weapons at any time and the military to be in "pre-emptive attack" mode in the face of growing threats from its enemies, state media said on Friday. (Reporting by Vladimir Soldatkin; Writing by Dmitry Solovyov; Editing by Jack Stubbs) NOW WATCH: IAN BREMMER: Greece is headed for a humanitarian disaster