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Travel bans, missile tests, sanctions and insults have been ping-ponged in a provocative show of force by both sides. It all raises concerns over the future of a deal, brokered by the Obama administration, that requires Iran to heavily restrict its nuclear program.

Iran threatens reciprocal measures through legal, consular and diplomatic actions.

January 29: Iran conducts a ballistic missile test, the first such test since Trump took office.

Iran establishes a committee to deal with the US travel ban. The committee is tasked with issuing directives to Iranian embassies worldwide, aimed at "upholding the dignity of Iranians outside of the country, especially those in the United States," Foreign Ministry spokesman Bahram Qassemi says.

Israeli Prime Minister Benjamin Netanyahu tweets that he will discuss the renewal of sanctions against Iran with Trump. Netanyahu is due to visit the White House on February 15.

"It cannot be that Iranian aggression will remain without an answer," Netanyahu says, adding he has ways of "undoing" the Iran nuclear accord.

January 31: UN Security Council holds talks on the missile test.

State Department spokesman Mark Toner says the US is "well aware of and deeply troubled by Iran's longstanding provocative and irresponsible activities."

Iran suggests Trump is trying to detract attention from a fallout over the travel ban.

Iran's Foreign Ministry says it will mull whether to allow the US wrestling team to enter the country for the World Cup.

Iran's defense minister, Brig. Gen. Hossein Dehqan, officially confirms the missile test, even though other officials have previously commented on it.

February 2: Trump says, "Nothing's off the table," when asked if he might respond to the missile test with military action.

Sources tell CNN that the White House is expected to impose additional sanctions on Iranian entities.

In response, Iran's Foreign Ministry says it will implement legal measures against Americans and US companies that have played a part in "creating and helping extremist terrorist groups in the region."

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How Iran-US relations plummeted in a week - CNN