Rainy Sky SA et al v Kookmin Bank [2010] All ER (D) 255 (May) In our Spring 2010 e-news we reported on the case of Kookmin Bank which dealt with the interpretation of a refund guarantee between Kookmin Bank (the “Bank”) and the customer of an insolvent shipyard. The Bank issued a refund guarantee to secure obligations assumed by its customer Jinse Shipbuilding (the “Builder”). The agreement required the Bank to repay on demand all of the instalments paid by the buyer, Rainy Sky, on the occurrence of a default event under the refund guarantee.