Trump hails a breakthrough with Iran, but Tehran disputes key claims on nuclear inspections, frozen assets and farm purchases in a tense post-deal standoff.

Iran denied making any new commitments during negotiations in Switzerland over the weekend.

Trump also said that unfrozen Iranian assets would be used to buy humanitarian supplies from the US, which Tehran also denies.

Conflicting reports emerged Tuesday regarding Iran's nuclear program and asset unfreezing. President Trump claimed Iran agreed to extensive inspections and that frozen assets…