WASHINGTON (AP) — As the Trump administration readies to re-impose sanctions on Iran that were lifted under the 2015 nuclear accord, America's European allies fear greater regional instability.

President Donald Trump's withdrawal from the landmark agreement, signed by the U.S. and five other world powers, remains one of the most consequential foreign policy decisions of his presidency.

Secretary of State Mike Pompeo said Sunday that renewed U.S. sanctions on Iran will be rigorously enforced and remain in place until the Iranian government radically changes course. While calling sanctions an im...