++++ Agriculture ° Common organization of the markets ° System of securities ° Force majeure ° Concept ° Official announcements of an international agreement concerning the regime for the import of maize into Spain ° Fall in the price of maize in that State ° Absence of force majeure vis-à-vis traders who had undertaken commitments pursuant to the Community regulations before the conclusion of the negotiations (Council Regulations Nos 2913/86 and 1799/87; Commission Regulations No 2220/85, Art. 22, and No 3593/86)