Pakistan, June 24 -- Fresh disagreements between the United States and Iran have cast uncertainty over the future of their recently signed peace framework, as both sides offered sharply different accounts of key commitments. President Donald Trump claimed Iran had agreed to allow international nuclear inspections indefinitely, while Tehran firmly rejected the assertion and insisted that no such concession had been made during negotiations held in Switzerland.

Despite the conflicting statements, Trump expressed confidence that discussions were progressing positively and said relations between the two sides were improving. Meanwhile, Washington eased travel restrictions on Iran's World Cup football team, allowing players to arrive in Seatt...