Russia’s President Vladimir Putin and North Korea’s leader Kim Jong Un react during a walk in the garden of the Kumsusan Guesthouse in Pyongyang, North Korea in this image released by the Korean Central News Agency June 20, 2024.

SEOUL, South Korea – North Korea and Russia have agreed to provide immediate military assistance if either faces armed aggression, according to the full text of a landmark pact released on Thursday, June 20, by Pyongyang after a visit by Russian President Vladimir Putin.

Hours after Putin departed for Vietnam, North Korea’s state media published the “Treaty on Comprehensive Strategic Partnership”, which in effect revives a defunct mutual defense agreement from the 1960s.

The agreement, which Putin and North Korean leader Kim Jong-un signed on Wednesday, June 19, and also included cooperation on nuclear energy, space exploration, food and energy security, is one of the highest-profile moves in Asia by Moscow in years. Putin visited China last month, soon after his inauguration for a fifth term as president.

“In case any one of the two sides is put in a state of war by an armed invasion from an individual state or several states, the other side shall provide military and other assistance with all means in its possession without delay in accordance with Article 51 of the UN Charter and the laws of the DPRK and the Russian Federation,” Article 4 of the agreement says, using the initials of North Korea’s official name.

Article 51 of the UN Charter provides for the right of a member country to take individual or collective self-defense actions.

Kim echoed Putin’s statement explicitly linking their deepening ties to fighting the “hegemonic and imperialist” policies of the West and the United State in particular, including its support for Ukraine.

It is unclear how the agreement will affect Russia’s war against Ukraine, which began with an invasion in February 2022.

Washington and Seoul have been increasingly alarmed by deepening military cooperation between Russia and the North, and have accused them of violating international laws by trading in arms for Russia to use against Ukraine. Ukrainian officials have said they have found North Korean missile debris inside their country. Russia and North Korea deny any arms trade.

“For all intents and purposes, this is a pact of military alliance,” said Artyom Lukin, of Russia’s Far Eastern Federal University. “This will be Moscow’s first defense alliance outside the post-Soviet space.”

However, the strength of any alliance primarily lies not in what is written down, and a mutual defense clause does not mean automatic involvement in one another’s wars, he said.

“It remains to be seen how far and how deep Russia and North Korea will go in their alliance relationship this time,” Lukin said. “Will North Korean troops appear in Ukraine? Will Russia provide military assistance to the North in possible North-South clashes over the disputed border in the Yellow Sea? Nothing is off the table now.”

Cho Han-bum, of the Korea Institute for National Unification in Seoul, said the agreement was a big win for Russia, laying a legal framework for North Korea’s support in the Ukraine war.

The wording leaves room for Moscow to avoid helping North Korea in border clashes or other future skirmishes if it chooses, he said.

On his first visit to Pyongyang since 2000, Putin thanked Kim for the support for Russian policy. Kim reaffirmed “unconditional” and unwavering support for “all of Russia’s policies” including Putin’s war with Ukraine.