TEHRAN, Iran — Supporters of Iran's main pro-reform presidential candidate formed a human chain that stretched nearly the entire length of Tehran on Monday in their biggest display of political might _ sending a powerful challenge to President Mahmoud Ahmadinejad's backers as both sides poured into the streets in the final days of the race.
The showdown atmosphere reflects the increasingly bitter tone between Ahmadinejad and his main rival, Mir Hossein Mousavi, in the campaign blitz before Friday's vote. Both have...
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