Russia may be close to sharing advanced satellite technology with North Korea after the isolated nation supplied troops to help bolster Moscow’s war in Ukraine, United States Secretary of State Antony Blinken warned Monday.

Pyongyang has provided Moscow with more than 10,000 soldiers, artillery, and ammunition during Russia’s war as the two sides have deepened their partnership.

North Korea test fires a ballistic missile as Blinken visits Seoul, where he warned that Putin could provide Kim Jong Un with advanced space technology.

Secretary of State Antony Blinken expressed confidence in South Korea’s acting leader as the two nations reaffirmed their security alliance in the face of the ongoing challenges posed by North Korea at a time when Seoul is struggling to restore political stability.

North Korean leader Kim Jong Un pledged to solidify the country's comprehensive strategic partnership with Russia in his letter to President Vladimir Putin on Monday, state media KCNA reported on Tuesday.

Ukrainian special forces have released several excerpts from a purported diary it said was found on a North Korean soldier killed in front-line fighting in Russia.

Blinken, who had planned to encourage South Korea to maintain Yoon’s policy of enhancing cooperation with Japan, was in talks in Seoul when North Korea fired a ballistic missile that fell into the sea. The missile flew about 1,100km, the South Korean military said.

North Korea fired a ballistic missile Monday, raising tensions in the region as Secretary of State Antony Blinken visited South Korea to reaffirm the security alliance between Washington and Seoul.Most Read from BloombergIs This Weird Dome the Future of Watching Sports?

South Korea was experiencing the coldest day of the winter so far Thursday with temperatures ranging from 14 degrees Fahrenheit down to minus 4 degrees.

TYRANT Kim Jong-un has unveiled North Korea’s largest naval destroyer that could house a vertical launchpad capable of firing guided cruise missiles. The mighty vessel – said to be