Korea and Japan roll a $10 billion swap line to 2029, one-seventh of its 2011 size

At $10 billion, unchanged through November 2029 ^[2], the line is 14.3% of the $70 billion it reached in 2011 ^[4][15], a gap of $60 billion ^[16], and five times the $2 billion it began with in 2001 ^[17]. Pick the first comparison and the extension looks like a shrunken backstop. Pick the second and it looks like a line rebuilt after it lapsed in February 2015 ^[5] and came back only after more than eight years ^[12].

We think the size follows two things, bilateral relations and market stress, and that neither is pressing at the moment. The history in the sources fits that. The line grew to $70 billion as the two countries worked through the global financial crisis and other shocks ^[14], was scaled back as relations soured ^[6], and lapsed entirely in 2015 ^[5]. The revival agreed in June 2023 ^[12] brought a structure in which each side deposits its own currency and draws dollars ^[9]. Liquidity is now described as ample ^[7], and the two ministers agreed to meet next in South Korea at an early date, following the 10th finance ministers' meeting in Tokyo in March ^[11]. An unchanged size is what we would expect with both drivers quiet.

The counter-thesis is that a symbol is cheap to keep and valuable if a shock arrives, because a line already in place is a line nobody has to negotiate in the middle of one. That is a fair argument. The finance ministry's Thursday statement ^[1], as reported, does not include fees, collateral terms or any drawing history, so the value cannot be checked from the public record.

A draw by either side would show the line is used for liquidity and not only for signalling. A deterioration in relations like the one that preceded the 2015 lapse ^[5][6] would put the 2029 date in doubt. The cleanest test of our view is a market shock with relations intact: if the line stays at $10 billion through it, we are wrong that size follows stress.