Why hasn't there been an "Iranian Spring"?

Attempts to revive street protests have fizzled. The opposition, which says its fight for a freer Iran will continue, is following the Arab uprisings with a mixture of envy and regret for its own failure, analysts and moderate former officials say.

“The opposition is leaderless and lacks any strategy. The opposition leaders are under house arrest. Dozens of prominent reformists are jailed. Their supporters have no choice but to wait and see,” said a close ally of opposition leader Mirhossein Mousavi, who asked not to be named…

The authorities, who deny the election was rigged, have jailed many senior pro-reform politicians, closed a dozen reformist publications and banned at least two moderate parties since the vote.

The government is permitting less and less political dissent by banning media coverage of the opposition, according to journalists working for local newspapers. The opposition continues to communicate over the Internet despite a web-filtering system designed by the authorities to curb its online activity.