Iran is to deploy missiles for a Revolutionary Guards exercise Saturday in a show of defiance a day after the United States imposed sanctions over a ballistic missile test launch last weekend.
Relations between Washington and Tehran have deteriorated sharply since Donald Trump took office last month promising a tough line on what he sees as Iranian belligerency towards US interests and allies.
Hours after the new US sanctions were announced, Pentagon chief James Mattis charged that Iran was "the single biggest state sponsor of terrorism in the world."
The new sanctions are the first of Trump's presidency and target what US officials say is Iran's weapons procurement network in Lebanon and China.
They are a response to Iran's test launch of a medium-range ballistic missile last Sunday as well as its support for Yemeni rebels who attacked a Saudi frigate earlier this week, officials said.
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