The Pentagon

Tensions rise as Iran speeds up enrichment, US sends troops

Iran will surpass the uranium-stockpile limit set by its nuclear deal in the next 10 days, an official said Monday, raising pressure on Europeans trying to save the accord a year after the U.S. withdrawal lit the fuse for the heightened tensions now between Tehran and Washington.

Hours later, the two countries seemed locked in a standoff when the Pentagon announced it was sending about 1,000 additional American troops to the Middle East to bolster security in the region in the face of what U.S. officials said was a growing threat from Iran.

The earlier announcement by Iran's nuclear agency marked yet another deadline set by Tehran. President Hassan Rouhani already has...

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