By VLADIMIR ISACHENKOV, Associated Press Writer
TEHRAN, Iran – Russian President Vladimir Putin arrived in Tehran on Tuesday for a historic visit to hold talks on Iran’s nuclear program and attend a Caspian sea summit.
The visit, the first by a Kremlin leader since World War II, is taking place despite warnings of a possible assassination plot and amid hopes that a round of personal diplomacy could help offer a solution to an international standoff on Iran’s nuclear program.
Putin’s trip was thrown into doubt when the Kremlin said Sunday that he had been informed by Russian special services that suicide attackers might ….

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