U.S. Vice President JD Vance said on Thursday that more than 12.5 million barrels of oil moved through the Strait of Hormuz overnight, the highest volume since the conflict began in late February, as a U.S.-Iran agreement entered a 60-day implementation period.Speaking at a White House briefing, Vance said the U.S. Navy had allowed more than a dozen ships to access Iranian ports, effectively lifting a blockade as part of an agreement aimed at ending the conflict. He said the increase in oil flows demonstrated that Washington was honouring its commitments under the initial military provisions of the deal.Vance said the 60-day period begins immediately, with final negotiations expected to determine the terms that will apply thereafter. He added that Iran did not fire on any ships overnight, a development likely to reassure energy markets concerned about disruptions to shipping through the Strait of Hormuz.While stressing that Iran would not be asked to relinquish its right to self-defence, Vance said the United States expects Tehran not to possess missiles capable of "broadly threatening the entire world" as part of a final agreement.On sanctions relief, Vance said the U.S. would be able to monitor how Iran sends and receives money, adding that Washington would closely scrutinise Tehran's financial activities under any future arrangement.He also said Iran would need substantial resources to rebuild any nuclear weapons programme and reiterated that the administration plans to brief Congress on the agreement in the near future.Addressing regional concerns, Vance said Israel must respect the peace process and described attacks on civilians in Beirut as unacceptable. He said the U.S. expects all parties to honour the Lebanon-related components of the agreement and ultimately wants the Lebanese government to police southern Lebanon.