President Donald Trump seems determined to pull out of the Iran nuclear deal this week, with US officials suggesting that any initial diplomatic turbulence will be followed by negotiations for a new agreement. IAEA Director General Yukiya Amano confirmed that he can't verify Section T of Annex I, in part due to the IAEA's inability to inspect Iranian military sites.
The European Union has said the deal "is working and it needs to be preserved".
This statement was made amid tensions between Jerusalem and Tehran over the Islamic Republic's attempts to expand its influence in neighboring Syria.
Despite strong support for the deal from all of America's major allies except Israel, Trump has set a May 12 deadline to declare whether he will withdraw - or that the deal can be "fixed" to his liking. But, he added, "That doesn't mean I wouldn't negotiate a new agreement".
Britain's Johnson will on Monday begin a two-day visit to Washington, with the nuclear deal among issues on top of the agenda, the Foreign Office said. But Trump and Netanyahu find themselves largely alone in an global arena that is largely favorable of the nuclear agreement.
Britain's Foreign Secretary Boris Johnson leaves after voting in local government elections in London, May 3, 2018.
"It has weaknesses, certainly, but I am convinced they can be remedied", Johnson wrote.
Thornberry said that Trump should work with European allies to address these shortcomings in the accord.
"Imagine all the mutually contaminating civil wars and internecine conflicts that rage across the Middle East today", Johnson added.
Iran, in turn, accused Mr Netanyahu of lying. "That is the scenario which the agreement has helped to prevent".
The foreign secretary continued: "At this delicate juncture, it would be a mistake to walk away from the nuclear agreement and remove the restraints that it places on Iran".
Trump has said unless European allies rectify "flaws" in Tehran's nuclear agreement with world powers by May 12 he will refuse to extend USA sanctions relief for Iran.
He will not meet President Trump, but is expected to appear on the Fox & Friends morning news, which Trump is known to watch avidly. He also will discuss key issues with congressional foreign policy leaders about Iran, North Korea, Syria and other global issues.
Boris Johnson, Britain's foreign secretary, is scheduled to meet with US officials during his current trip to Washington. He was one of the key figures in planning and reaching the Iran deal. But of course we are looking at all eventualities...
Netanyahu told his Cabinet that Iran has delivered advanced weapons to Syria "in order to attack us both on the battlefield and on the home front, including weaponized UAVs, ground-to-ground missiles and Iranian anti-aircraft batteries that would threaten air force jets".