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"The -ize spelling is preferred by some authoritative British sources including the Oxford English Dictionary — which, until recently, did not list the -ise form of many words, even as an alternative — and Fowler's Modern English Usage. The OED firmly deprecates usage of '-ise', stating, '[T]he suffix…, whatever the element to which it is added, is in its origin the Gr[eek] -ιζειν, L[atin] -izāre; and, as the pronunciation is also with z, there is no reason why in English the special French spelling in -iser should be followed, in opposition to that which is at once etymological and phonetic.' Noah Webster rejected -ise for the same reasons. Despite these denouncements, however, the -ize spelling is now rarely used in the UK in the mass media and newspapers, and is often incorrectly regarded as an Americanism."
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"The OED spelling (which can be indicated by the registered IANA language tag en-GB-oed), and thus -ize, is used in many British-based academic publications, such as Nature, the Biochemical Journal and The Times Literary Supplement."
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"Worldwide, -ize endings prevail in scientific writing and are commonly used by many international organizations."
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American and British English spelling differences
The Moomintrolls are wrong and I'm right. 
Do you know when Fowler's Modern English Usage was written, Lit? And do you know why Fowler didn't like "ise"?
See, now that you've had a few days, even you can locate texts such as the above on the Internet. We had this discussion a few days ago. You missed a very basic point: you claimed "ise" is wrong.
It isn't. It's an alternative spelling, used by more than 60 million people. I never said "ize" is wrong, because it isn't.
By the way, you might want to read the rest of the Wikipedia article you quoted.
Is Semicolon back yet?