WI Lord Rothermere becomes King of Hungary?

I don't think this POD has been used before, so here goes:

In OTL Lord Rothermere [http://en.wikipedia.org/wiki/Harold_Harmsworth,_1st_Viscount_Rothermere] was offered to become King of Hungary after an editorial he wrote in which he supported a detailed plan to restore to Hungary large pieces of territory it lost at the end of WW1. Now, it wasn't particularly serious, but it was an offer, all the same.

So, for whatever reason, the offer is serious and Rothermere accepts it. What would its effects be?
 
Well, if he has the same political opinions as in OTL, Hungary is likely to be a sort of fascist kingdom, though I don't see him allying with Germany against the UK. Not so sure about his son Esmond, though, as the wiki article doesn't go into detail on his politics.
 
“He did purchase estates in Hungary in case Britain should fall to a Soviet invasion.”
He does not seem to have been of the politically far-sighted kind.

BTW, this scenario should be moved to ASB. Horthy would never have gone through with it, and I very seriously doubt that France and the UK would have been OK with it.
 
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