Afghanistan, July 11 -- Senior U.S. officials have become increasingly skeptical that a new nuclear agreement with Iran can be reached, The Wall Street Journal reported, as military tensions in the Gulf deepen and both sides harden their positions despite ongoing diplomatic efforts.

The Wall Street Journal reported on Friday, July 11, citing senior U.S. officials, that the Trump administration has grown increasingly pessimistic about the prospects of securing a new nuclear agreement with Iran. According to the report, officials now believe diplomacy alone may no longer be sufficient to resolve the long-running dispute over Tehran's nuclear program.

The report said Washington expects Iran to publicly guarantee the security of international...