Hamas Acted On A Very Real Fear Of A US-Sponsored Coup
http://www.guardian.co.uk/israel/Story/0,,2108926,...
Was Hamas's seizure of Fatah security offices in Gaza unprovoked, or a pre-emptive strike to forestall a coup by Fatah?
The fundamental cause is, of course, well known. Israel, aided by the US, was not prepared to accept Hamas's victory in last year's Palestinian elections. Backed by a supine EU, the two governments decided to boycott their new Palestinian counterparts politically and punish Palestinian voters by blocking economic aid [in order to] turn voters against Hamas
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Plenty of interesting comments after the article, too.