North Korean leader Kim Jong Un has arrived in Russia for a meeting with President Vladimir Putin.

South Korea’s defense ministry confirmed that Kim’s armored train entered Russia on Tuesday morning. Kim’s tour team includes North Korean military personnel and high-ranking government officials.

With Kim Jong Un’s visit to Russia, there is a possibility that Russia and North Korea could discuss an arms deal, US officials said.

The meeting between Kim and Putin amid the Ukraine conflict seems to have been taken with great interest by the West.