US and Iran Sign Historic Deal to End 110-Day War as Domestic Fights Over $80 Billion Cost Begin
President Trump and Iranian President Masoud Pezeshkian have signed a memorandum of understanding to halt hostilities, reopen the Strait of Hormuz, and lift the US naval blockade. The breakthrough comes as the Pentagon faces bipartisan scrutiny over an $80 billion supplemental funding request to cover the war's mounting costs.
By Factlen Editorial Team
- US Administration
- The White House views the agreement as a historic victory that ends a costly conflict while securing vital concessions on Iran's nuclear program.
- Israeli Leadership & Hawks
- Israeli officials and US defense hawks argue the deal is a dangerous capitulation that rewards Iranian aggression.
- Congressional Budget Watchdogs
- Lawmakers are alarmed by the staggering, opaque financial toll of the conflict and its impact on the broader US military budget.
- Iranian Government
- Tehran frames the agreement as a victory of endurance that successfully broke the US economic siege.
What's not represented
- · European Allies
- · Gulf State Leaders
- · Lebanese Civilians
Why this matters
The agreement pulls the global economy back from the brink by reopening a critical oil chokepoint and ending a conflict that has killed thousands. However, the massive financial toll of the war and the geopolitical concessions made to Tehran will reshape US domestic politics and Middle Eastern security for years.
Key points
- The US and Iran signed a memorandum of understanding to end their 110-day conflict.
- The agreement reopens the Strait of Hormuz and lifts the US naval blockade on Iranian ports.
- Iran will receive sanctions relief and a $300 billion reconstruction fund in exchange for diluting enriched uranium.
- The Pentagon is requesting an $80 billion supplemental budget to cover the war's costs, sparking congressional outrage.
- The deal has severely strained relations between the US administration and Israeli leadership.
The United States and Iran have officially signed a memorandum of understanding to end their 110-day war, halting a conflict that devastated the global economy and claimed thousands of lives. Brokered by Pakistan, the agreement was signed remotely by US President Donald Trump and Iranian President Masoud Pezeshkian, initiating an immediate ceasefire across all fronts. The breakthrough pulls the Middle East back from the brink of a wider regional conflagration, though it leaves deep geopolitical fractures and a massive financial bill in its wake.[1][5]
The immediate geopolitical impacts of the 14-point framework are sweeping. The United States has lifted its naval blockade on Iranian ports, while Tehran has agreed to instantly reopen the Strait of Hormuz—a critical maritime chokepoint through which roughly a fifth of the world's oil supply passes. The pact also explicitly mandates a halt to fighting in Lebanon, effectively requiring Iran to rein in Hezbollah forces that have been locked in intense combat with the Israeli military since the war began on February 28.[1][4][5]
Under the terms of the preliminary agreement, Iran will receive massive economic relief. The US has committed to waiving sanctions on Iranian crude oil exports and facilitating a $300 billion international reconstruction fund to help rebuild the country's shattered infrastructure. In exchange, Tehran pledged to dilute its stockpile of highly enriched uranium and enter a 60-day negotiating window to finalize a comprehensive nuclear settlement.[1][5]

But as the guns fall silent in the Persian Gulf, a fierce political battle is erupting in Washington over the financial toll of the conflict. The Pentagon has quietly informed lawmakers that it needs an $80 billion supplemental funding package to cover the costs of the Iran war and replenish severely depleted munitions stockpiles. This figure dwarfs the Defense Department's previous public estimate of $25 billion, sparking immediate outrage on Capitol Hill.[3][6]
The sticker shock is threatening to derail the Trump administration's broader defense agenda just months ahead of the midterm elections. Defense Secretary Pete Hegseth faced intense bipartisan scrutiny this week while attempting to defend the administration's historic $1.5 trillion military budget request for 2027. Lawmakers accused the Pentagon of obscuring the true cost of a war that was initiated without congressional approval, demanding full transparency before authorizing new funds.[2][3]
The sticker shock is threatening to derail the Trump administration's broader defense agenda just months ahead of the midterm elections.
"You can win a whole lot of little small battles and lose the war, which is why you don't stumble into the war in the first place," Representative Adam Smith, the top Democrat on the House Armed Services Committee, argued during the contentious hearings. The administration's budget director had previously testified that the White House had no official estimate for the war's total cost, a position that is now untenable as the $80 billion bill comes due.[3][6]

Internationally, the peace agreement has severely strained the historically ironclad US-Israel alliance. Israeli Prime Minister Benjamin Netanyahu and his cabinet view the deal as a dangerous capitulation that leaves Israel highly vulnerable. Israeli officials note that the memorandum fails to dismantle Iran's vast ballistic missile program or permanently cut off funding to proxy militias, effectively rewarding Tehran for its aggression.[1][7]
In response to the mounting criticism from Jerusalem, President Trump has publicly lashed out at Netanyahu, calling his judgment into question and claiming credit for Israel's continued existence. The unprecedented public rift between the two leaders underscores the shifting dynamics of the Middle East, as the US prioritizes economic stability and military disengagement over Israel's immediate security demands.[7][8]

In Tehran, the mood is triumphant but cautious. Supreme Leader Ayatollah Mojtaba Khamenei—who assumed power after his father, Ali Khamenei, was killed in a US-Israeli airstrike on the first day of the war—issued a written statement approving the deal. Khamenei noted he had a "different view" on the negotiations but permitted the agreement to proceed in order to lift the crushing economic pressure on the Iranian people.[5]
The ultimate success of the peace framework now hinges entirely on the fragile 60-day negotiating window. US officials have warned that either side can walk away at any time, and President Trump has threatened to resume bombing if a final, binding nuclear pact is not reached. For now, global markets are breathing a sigh of relief as oil tankers resume their transit through the Persian Gulf, but the underlying conflicts that sparked the war remain unresolved.[1][5]
How we got here
Feb 28, 2026
The US and Israel launch a military campaign against Iran, sparking a 110-day war.
April 2026
The US imposes a naval blockade on Iranian ports after initial peace talks collapse.
June 17, 2026
President Trump and Iranian President Pezeshkian sign a memorandum of understanding to end the conflict.
June 19, 2026
The Pentagon requests an $80 billion supplemental budget to cover the war's mounting costs.
Viewpoints in depth
The US Administration
The White House views the agreement as a historic victory that ends a costly conflict while securing vital concessions on Iran's nuclear program.
President Trump and his allies argue that the swift application of military force and the subsequent naval blockade successfully brought Tehran to the negotiating table. By securing a commitment to dilute enriched uranium and reopening the Strait of Hormuz, the administration claims it has stabilized the global economy and prevented a nuclear-armed Iran, justifying the war's financial and human costs.
Israeli Leadership & Security Hawks
Israeli officials and US defense hawks argue the deal is a dangerous capitulation that rewards Iranian aggression.
Critics, including Prime Minister Benjamin Netanyahu and several Republican lawmakers, point out that the memorandum of understanding leaves Iran's ballistic missile infrastructure and proxy networks largely intact. They argue that providing Tehran with sanctions relief and a $300 billion reconstruction fund will ultimately finance future attacks against Israel, leaving the region more volatile than before the war began.
Congressional Budget Watchdogs
Lawmakers are alarmed by the staggering, opaque financial toll of the conflict and its impact on the broader US military budget.
Democrats and fiscal conservatives are furious over the Pentagon's $80 billion supplemental funding request, noting it vastly exceeds initial estimates. They argue that the administration bypassed Congress to launch a war of choice, and are now demanding full transparency before approving the historic $1.5 trillion defense budget for 2027.
The Iranian Government
Tehran frames the agreement as a victory of endurance that successfully broke the US economic siege.
Iranian officials, including the newly elevated Supreme Leader Mojtaba Khamenei, emphasize that the deal forces the US to lift its naval blockade and waive crippling oil sanctions. While hardliners express skepticism about Washington's long-term reliability, the government views the influx of frozen assets and reconstruction funds as a necessary lifeline to stabilize the country after 110 days of devastating bombardment.
What we don't know
- Whether the US and Iran will successfully negotiate a final, binding nuclear pact within the 60-day window.
- How Congress will ultimately vote on the Pentagon's $80 billion supplemental funding request.
- Whether Israel will take unilateral military action against Iranian proxy forces despite the ceasefire agreement.
Key terms
- Strait of Hormuz
- A vital maritime chokepoint between the Persian Gulf and the Gulf of Oman, through which roughly 20% of the world's oil supply passes.
- Memorandum of Understanding (MoU)
- A preliminary, non-binding agreement outlining the broad terms of a deal before a final, comprehensive treaty is negotiated.
- Supplemental Funding
- An emergency budget request made to Congress to cover unexpected expenses that exceed the standard annual budget.
Frequently asked
What does the US-Iran peace deal actually do?
The memorandum of understanding halts all military operations, lifts the US naval blockade on Iran, and reopens the Strait of Hormuz. In exchange for sanctions relief and reconstruction funds, Iran agreed to dilute its enriched uranium and enter a 60-day window to negotiate a final nuclear pact.
How much did the US-Iran war cost?
While initial Pentagon estimates placed the cost at $25 billion, the Defense Department has recently informed lawmakers that it needs an $80 billion supplemental package to cover the war's expenses and replenish munitions.
Why is Israel unhappy with the agreement?
Israeli officials argue the deal provides Iran with massive financial relief without dismantling its ballistic missile program or permanently cutting off its funding to proxy militias like Hezbollah.
Sources
[1]The GuardianIranian Government
US-Iran deal takeaways: reopening the strait of Hormuz, waived oil sanctions and Lebanon
Read on The Guardian →[2]The New York TimesCongressional Budget Watchdogs
The Costs of the Iran War: Thousands of Lives and Billions of Dollars
Read on The New York Times →[3]The New York TimesCongressional Budget Watchdogs
Trump’s Military Budget Hits Snags Amid Questions on Iran War Costs
Read on The New York Times →[4]CBS NewsIranian Government
Switzerland says U.S.-Iran talks postponed
Read on CBS News →[5]Gulf NewsUS Administration
Trump, Iran's president sign deal to end war
Read on Gulf News →[6]The Economic TimesCongressional Budget Watchdogs
Pentagon tells US lawmakers it needs $80 billion for Iran war and other bills, WSJ reports
Read on The Economic Times →[7]The HinduIsraeli Leadership & Hawks
Trump goes after Netanyahu as he pursues deal with Iran, putting their friendship to test
Read on The Hindu →[8]AxiosUS Administration
Trump's "Great Man" theory: "No limits" to his power
Read on Axios →
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