North Korea's Kim Jong Un reportedly arrived in Russia Tuesday ahead of an expected meeting with President Vladimir Putin, officials said.

The two leaders, flanked by their top military officials, are set to negotiate a potential arms deal to help resupply Moscow's military drained by its war in Ukraine. North Korea may have tens of millions of artillery shells and rockets that could give a boost to the Russian army, analysts say.

North Korea's official Korean Central News Agency previously said Kim boarded his personal train Sunday afternoon en route to Russia, accompanied by unspecified members of the country's ruling party, government and military.