Trump weighs Iran strikes
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Iranian president vows to stand firm as Trump threatens strikes and the US bolsters its military presence in the Gulf.
Iran and the U.S. traded threats and warnings even as negotiators sat down to discuss a deal to avert a war, but Tehran says "we now have a clearer path ahead."
The U.S. struck several Iranian nuclear sites last June and insists it would not allow Tehran to develop nuclear weapons.
It comes shortly after Vice President JD Vance accused Iran of failing to address core U.S. demands during nuclear talks in Geneva.
The second round of talks in Geneva about Iran's nuclear program takes place as the United States ramps up its military presence in the Middle East and Iran holds large-scale maritime exercises.
The U.S. Congress could vote as soon as next week on whether to block President Donald Trump's ability to strike Iran without lawmakers' approval, as the U.S. military prepares for a potential serious conflict with Iran if diplomatic efforts fail.