The Monitor's View

Sanctions on Iran's gasoline imports? That's war talk.

Congress is moving quickly to force Obama into blocking gasoline sales to Iran over its nuclear ambitions. A US naval blockade is the only real way to enforce that. And from Iran's point of view, that means war.

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“We have waited long enough for diplomacy to work,” says Senate majority leader Harry Reid. “Iran is a festering sore in the world.”

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Mr. Obama may be able to fend off pressure from Congress to strangle Iran’s economy with sanctions on its gasoline imports. But much depends on whether countries like China, Russia, and even Germany are willing to impose other types of penalties that are more targeted at top members of the regime, especially the Revolutionary Guard and its affiliated companies. The toughest ones proposed by Obama focus on Iran’s access to banking, insurance, and credit. The White House hopes the UN Security Council will agree by early May to a package of new sanctions.

The US has been successful since 2006 in having the Council ratchet up pressure on Iran as that country further defies calls for it to open its secret nuclear program to international inspections. The West is especially worried about Iran’s rush to produce bomb-grade uranium.

China’s cooperation is essential. It recently hinted that it is ready to support some of Obama’s proposed sanctions. Critical to China’s support are offers from Arab oil exporters to make up for its loss of oil exports from Iran. Another signal of China’s support was a visit by its Navy to the United Arab Emirates last month.

Hovering over these moves is the threat of Israeli air attacks on Iran’s nuclear facilities. Israel did strike Iraq’s nuclear plant in 1981 and a Syrian one in 2007.

The US opposes such an Israeli operation, which could create an uncertain escalation of conflict in the Middle East. But some experts say the US would have a tough time restraining Israel if that country attacks Iran before the US elections this November. Support for Israel is very high in Congress.

US lawmakers need to be concerned that any unilateral US sanctions on gas imports to Iran could lead to a naval confrontation. Such a measure should only be taken with the widest international support and only if Iran appears ready to deploy a nuclear weapon that would destabilize the region. Similar conditions were not in place before President George W. Bush ordered the invasion of Iraq, and that war effort suffered for it.

Preemptive war, even if it only a naval blockade, should never be done lightly.