Russian President Vladimir Putin has signed a landmark defense cooperation agreement with North Korea, formalizing months of growing military ties between the two nations. The deal, ratified by Russia’s parliament and signed by Putin on Saturday, obligates both countries to provide military assistance “without delay” in the event of an attack on the other.

First agreed upon during Putin’s June visit to North Korea, the pact marks a significant step in the resurgence of security cooperation between the former Cold War allies. The agreement also includes commitments to collaborate internationally in opposing Western sanctions and coordinating their positions at the United Nations.

The defense pact comes as reports indicate that North Korea has dispatched approximately 10,000 troops to support Russia’s ongoing war against Ukraine. Both Ukraine and Western intelligence agencies have raised concerns about North Korea’s involvement, with claims that the troops are being deployed to assist Russian forces on the front lines. When questioned about the deployment, Putin did not deny the reports, instead criticizing the West’s support for Ukraine.

The new agreement solidifies North Korea’s role as a vocal supporter of Russia’s actions in Ukraine, with both countries continuing to strengthen their military and strategic ties amid growing tensions with the West.