The hardliner said that the United States and its allies must be blamed for imposing dictatorships on regional countries now in the grip of deadly revolts.
These "dictators who are killing their own people are incapable of manufacturing even simple things and they are killing their people with weapons they bought from America and its allies," said Ahmadinejad.
"The American government and its allies should be held accountable for imposing dictatorship on these nations in the past 30 to 40 years and Western officials are now claiming that they are supporters of people and democracy," he added.
Iranian officials have expressed support for the wave of protests that began in Tunisia and Egypt and have spread around the region, now threatening longstanding regimes in Libya, Yemen and Bahrain.
Supreme leader Ayatollah Ali Khamenei described the events as an "Islamic awakening."
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