TEHRAN/BRUSSELS: Iran accused Europeans Monday of waging “psychological warfare” after the EU banned imports of Iranian oil, joining the United States in new sanctions aimed at preventing Tehran from getting nuclear weapons.

The Islamic Republic, which denies trying to build an atomic bomb, scoffed at efforts to choke its oil exports, as Asia lines up to buy what Europe scorns. Some Iranians also renewed threats to stop Arab oil from leaving the Gulf and warned they might strike U.S. targets worldwide if Washington used force to break any Iranian blockade of a strategically vital shipping route.

Yet in three decades of confrontation between Tehran and the West, bellicose rhetoric and the undependable armory of sanctions have become so familiar that the benchmark Brent crude oil price edged less than 0.5 percent higher, and some of that was due to unrelated currency factors.

“If any disruption happens regarding the sale of Iranian oil, the Strait of Hormuz will definitely be closed,” Mohammad Kossari, deputy head of parliament’s foreign affairs and national security committee, told Fars news agency a day after U.S., French and British warships sailed back into the Gulf.

“If America seeks adventures after the closure of the Strait of Hormuz, Iran will make the world unsafe for Americans in the shortest possible time,” Kossari added, referring to an earlier U.S. pledge to use its fleet to keep the passage open.

The United States, which imposed its own sanctions against Iran’s oil trade and central bank on Dec. 31, welcomed the EU move, as did Israel.

It has warned it might attack Iran if sanctions do not deflect Tehran from a course that some analysts argue could potentially give Iran a nuclear bomb next year.

U.S. Secretary of State Hillary Clinton said in a statement with Treasury Secretary Timothy Geithner: “This new, concerted pressure will sharpen the choice for Iran’s leaders and increase their cost of defiance of basic international obligations.”

The Obama administration also imposed sanctions on Iran’s third largest bank Monday.

Iran’s Bank Tejarat and an affiliate, Belarus-based Trade Capital Bank, were blacklisted for providing financial services to other entities already sanctioned for their involvement with the country’s nuclear weapons program, the U.S. said.

Germany, France and Britain used the EU sanctions as a cue for a joint call to Tehran to renew long-suspended negotiations on its nuclear program. Russia, like China a powerful critic of the Western approach, said talks might soon be on the cards.

Iran, however, said new sanctions made that less likely. It is a view shared by some in the West who caution that such tactics risk hardening Iranian support for a nuclear program that also seems to be subject to a covert “war” of sabotage and assassinations widely blamed on Israeli and Western agents.

European Union foreign ministers who agreed an anticipated ban on imports of Iranian crude at a meeting in Brussels were so anxious not to penalize the ailing economies of Greece, Italy and others to whom Iran is a major oil supplier that the EU embargo will not take full effect until July 1.

A member of Iran’s influential Assembly of Experts, former Intelligence Minister Ali Fallahian, said Tehran should respond to the delayed-action EU sanctions by stopping sales to the bloc immediately, denying the Europeans time to arrange alternative supplies and damaging their economies with higher oil prices. “The best way is to stop exporting oil ourselves before the end of this six months and before the implementation of the plan,” the semi-official Fars news agency quoted him as saying.

Iranian Foreign Ministry spokesman Ramin Mehmanparast, quoted by state television, said: “European Union sanctions on Iranian oil is psychological warfare ... Imposing economic sanctions is illogical and unfair but will not stop our nation from obtaining its rights.”

“The European countries and those who are under American pressure should think about their own interests. Any country that deprives itself from Iran’s energy market, will soon see that it has been replaced by others,” Mehmanparast added.

The EU measures included an immediate ban on all new contracts to import, purchase or transport Iranian crude and petroleum products. However, EU countries with existing contracts to buy oil and petroleum products can honor them up to July 1, and there would be a review of the plans before then.

EU officials said they also agreed to freeze the assets of Iran’s central bank and ban trade in gold and other precious metals with the bank and state bodies.

EU foreign policy chief Catherine Ashton said of the new sanctions: “I want the pressure of these sanctions to result in negotiations ... I want to see Iran come back to the table and either pick up all the ideas that we left on the table ... last year ... or to come forward with its own ideas.”

Iran has said lately that it is willing to hold talks with Western powers, though there have been mixed signals on whether conditions imposed by either side make new negotiations likely.

Russian Foreign Minister Sergei Lavrov, classifying the EU embargo among “aggravating factors,” said Moscow believed there was a good chance that talks between the six global powers and Iran could resume soon and that Russia would try to steer both Iran and the West away from further confrontation.

His ministry issued an official statement expressing “regret and alarm”: “What is happening here is open pressure and diktat, an attempt to ‘punish’ Iran for its intractable behavior ... This is a deeply mistaken approach, as we have told our European partners more than once. Under such pressure Iran will not agree to any concessions or any changes in its policy.”