15 Pyongyang has sent 10,000 soldiers to Russia, but it’s unclear what kind of soldiers they are.Russian President Vladimir Putin and North Korean leader Kim Jong Un signed a strategic defense agreement between Moscow and Pyongyang on June 19, further deepening military ties between the two countries.North Korea has already supplied Russia with artillery shells and ballistic missiles, but sending troops would mark a significant geopolitical escalation in their cooperation.But according to experts who spoke to the Kyiv Independent, for now at least, it's a sign of Russian desperation that could have limited effect."The disclosure that North Korean troops may appear on the front line is a direct consequence of catastrophic Russian casualties," John Foreman CBE, the U.K.'s former defense attache in Moscow from 2019 to 2022, told the Kyiv Independent.