The Guardian view on Putin and Kim: an alarming new pact needs close attention

Vladimir Putin and Kim Jong-un shake hands after a signing ceremony following their bilateral talks in Pyongyang. Photograph: KCNA VIA KNS/AFP/Getty

A shiny, sanctions-busting Russian limousine for Kim Jong-un. A fawning, rapturous reception for Vladimir Putin. These grand gestures may be welcomed by the North Korean and Russian leaders, but are intended as much for their global audience as for each other. The real prize is the strategic partnership treaty that they signed during Mr Putin’s first visit to Pyongyang since 2000. The question is what it will mean in practical terms.

The relationship has been reinvigorated by events outside Asia, but hopes of containing it lie within the region. The proximate cause is evidently Russia’s invasion of Ukraine: an isolated and impoverished Pyongyang is already believed to have supplied millions of artillery shells in return for cheap oil, food and other sorely needed goods. Russia might also benefit from North Korean manpower, though much more likely for labour than combat.

Further back lies Donald Trump’s disastrous wooing and dismissal of Mr Kim. Entirely predictably, by handing him a top-level summit without any realistic strategy to improve relations in the long term, the then president ensured Mr Kim gave up on improving relations with the US and looked elsewhere. He also prompted Mr Putin and Xi Jinping, who had kept Mr Kim at a distance, to hug him closer.

The revival of a Soviet-era pledge of mutual support against “aggression” sounds primarily symbolic given North Korea’s nuclear prowess. More disturbing is Mr Putin’s remark that the partnership could include “military technical cooperation”. US intelligence officials have said that they believe Russia is providing nuclear submarine and ballistic missile technology, though it is likely to extract a high price for such expertise and to have mixed feelings about North Korea’s advances. At a minimum, Russia – which signed up to sanctions in the Obama years – is now obstructing diplomatic action to restrain North Korea.

The west has long feared a stronger relationship between Pyongyang, Moscow and Beijing. The launch of the Australian, UK and US (Aukus) security pact, a reaction to China’s growing forcefulness in the Asia-Pacific region, has in turn raised Beijing’s hackles. But China does not regard the others as peers and does not want to be seen as part of a trilateral axis with two pariah states, hence the lack of a Beijing stop on Mr Putin’s Asian tour itinerary. It would also like to retain primacy in managing North Korea, and to limit its weapons development. It does not want the US to become more active in the region and is concerned that it is growing closer to Japan and South Korea, which are also increasing their defence capabilities. Mr Kim’s shift from the long-held commitment to unification with the South to stressing hostility has not helped.

South Korea also said explicitly that it will consider sending arms to Ukraine in reaction to the Russian-North Korean deal, spelling out the message to Moscow. Until now, Seoul has limited direct support to non-lethal supplies, though it has signed hefty arms deals with allies of Kyiv. Russia, which has also ramped up its own arms manufacturing at speed, may in the longer term seek to rekindle relations with South Korea and Japan anyway; their large economies compare strikingly to the limited attractions of North Korea. That too offers hope that this deal could be constrained both in extent and duration. The danger is how much damage is caused in the meantime.