Is the 60-day window period a sign of peace or a delaying tactic?

The Deputy Minister of Iran's Foreign Ministry stated that the Iran-U.S. Understanding Memorandum has been finalized and will be signed in Switzerland on June 19. After the signing, the U.S. maritime blockade against Iran will be lifted, and the war will be permanently ended on all fronts, including the Lebanon front, entering a 60-day final agreement negotiation period to discuss nuclear issues, sanctions relief, economic mechanisms, and verification; if the other party breaches the agreement, Iran will take action.