Iran Plots Revenge, U.S. Says

The U.S. has intercepted an order from Iran to militants in Iraq to attack the U.S. Embassy and other American interests in Baghdad in the event of a strike on Syria, officials said, amid an expanding array of reprisal threats across the region.

Military officials have been trying to predict the range of possible responses from Syria, Iran and their allies. U.S. officials said they are on alert for Iran’s fleet of small, fast boats in the Persian Gulf, where American warships are positioned. U.S. officials also fear Hezbollah could attack the U.S. Embassy in Beirut.

While the U.S. has moved military resources in the region for a possible strike, it has other assets in the area that would be ready to respond to any reprisals by Syria, Iran or its allies.

That process slowed last weekend when Mr. Obama said he would first seek an authorization for using military force from Congress.

A delay in a U.S. strike would increase opportunities for coordinated retaliation by groups allied with the Assad government, including Shiite militias in Iraq, according to U.S. officials.

Israel has so far been the focus of concerns about retaliation from Iran and its Lebanese militant ally Hezbollah. The commander-in-chief of Iran’s elite Revolutionary Guard Corps said last week that an attack on Syria would lead to the “destruction of Israel.”

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