Iran Nuclear Deal Falters as Contingency Plans Considered

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The top diplomats from the U.S. and Iran said progress in nuclear negotiations may not be enough to meet a July 20 deadline for clinching a long-term accord.

U.S. Secretary of State John Kerry flew back to Washington after failing to reach a breakthrough with his Iranian counterpart, Mohammad Javad Zarif. Iran’s foreign minister is staying on in Vienna in an attempt to bridge the gaps to an agreement over the next five days.