Representative Don Beyer accused President Donald Trump on Sunday of manufacturing the very crisis he now cites to justify the ongoing war with Iran, arguing that Trump’s 2018 withdrawal from the Obama-era nuclear deal set the stage for the conflict the country now finds itself in. The Virginia Democrat made the claim in a post on X, arguing that the path out of the war is the same path that existed more than a decade ago: negotiation rather than military force.
Beyer’s post read in full: “Donald Trump points to Iran’s nuclear program as justification for this war, but he helped create this crisis by walking away from the nuclear deal negotiated by President Obama. The solution today is the same as it was in 2015: diplomacy, not war.”
The statement places direct responsibility on Trump for the trajectory that led to the present war, which began on February 28, 2026, when the United States and Israel launched joint strikes against Iran, killing Supreme Leader Ali Khamenei and targeting Iranian military and nuclear facilities. Beyer’s argument centers on a chronology stretching back more than a decade: the 2015 nuclear agreement negotiated under President Obama, Trump’s 2018 decision to abandon it, and the war that followed nearly eight years later, which Trump has defended by pointing to Iran’s nuclear ambitions.
Beyer has been a consistent voice on Iran policy since well before entering Congress. He served as U.S. Ambassador to Switzerland from 2009 to 2013, a posting that carries particular weight on this issue because Switzerland has functioned as the “protecting power” handling diplomatic communications between Washington and Tehran, which have had no formal diplomatic relations since 1980.
When the Joint Comprehensive Plan of Action, commonly known as the JCPOA or the Iran nuclear deal, was announced in July 2015, Beyer was an early and public supporter. In an op-ed published July 14, 2015, titled “Why I’ll vote in favor of the Iran nuclear deal,” he wrote that under the agreement, Iran’s nuclear program would be placed under international monitoring around the clock, with inspectors granted access to any suspected military site.
Beyer’s support for the deal did not waver as Trump moved to unravel it during his first term. On October 13, 2017, after Trump announced he would decertify Iranian compliance with the JCPOA, Beyer issued a sharply worded statement titled “Temper Tantrums Are Not a Substitute for Careful International Diplomacy.” In it, he said Trump’s decertification had “no basis in fact” and was “shortsighted and foolhardy,” noting that the Chairman of the Joint Chiefs of Staff, the International Atomic Energy Agency, and America’s European partners all maintained at the time that Iran was in compliance with the agreement.
In that same 2017 statement, Beyer argued that decertification undermined U.S. credibility as a negotiating partner and amounted to “a slap in the face” to American allies, warning that a critical foreign policy decision appeared to have been driven by the president’s temperament rather than national security interests. He called on Congress at the time to “do no further harm” and preserve the agreement, which he described as the country’s “best chance to prevent a nuclear-armed Iran.”
Trump formally withdrew the United States from the JCPOA on May 8, 2018, reinstating sanctions that the deal had lifted and arguing the agreement had failed to curb Iran’s ballistic missile program and regional influence. Iran began exceeding the deal’s nuclear limits within roughly a year of the American exit, according to nonpartisan trackers including the Council on Foreign Relations, which notes the agreement has been “near collapse” ever since Trump’s withdrawal.
Nearly eight years later, when U.S. and Israeli forces struck Iran on February 28, 2026, Beyer again went on record. In a statement issued that day of the initial strikes, he said “the American people rightly do not want a war with Iran” and called Trump’s war “not smart,” “not legal,” and “not in our national interest.” He argued that Trump had not made a public case for the conflict to Congress or the country and had not sought congressional authorization, calling the war “plainly illegal and unconstitutional.”
In that same February statement, Beyer drew the same causal line he repeated in Sunday’s post, saying the only justifications offered for the war were “Trump’s failure to conclude a deal like the one he inherited and foolishly tore up,” alongside the stated goal of destroying a nuclear program Trump himself had previously claimed to have already “obliterated” in strikes months earlier. He said the reasoning did not “inspire confidence in the incoherent strategy of an increasingly erratic president,” and he called on House leadership to bring lawmakers back into session to vote on the Khanna-Massie War Powers Resolution.
As the war escalated in the weeks that followed, Beyer’s public statements grew more pointed. On April 7, 2026, after Trump signaled his intent to further escalate the conflict and target Iranian civilian infrastructure, Beyer accused congressional Republicans of “abdicating their duty” and turning “a blind eye” to what he described as “unhinged threats to obliterate an entire civilization.” He called it “a moral failure and cowardice of the highest order” and again demanded that Speaker Mike Johnson reconvene the House to vote on a War Powers Resolution.
By June 18, 2026, after the United States and Iran reached a memorandum of understanding, Beyer issued a statement making his underlying view of the conflict explicit: “The President should never have started this war.”
Beyer’s criticism of Trump’s approach to nuclear diplomacy has extended beyond Iran in recent weeks. On July 29, 2026, he joined Senators Edward Markey and Jeff Merkley and Representative John Garamendi, co-chairs with Beyer of the bicameral Nuclear Weapons and Arms Control Working Group, in publishing an opinion piece arguing that a Trump administration nuclear cooperation agreement with Saudi Arabia lacked adequate nonproliferation safeguards. The piece argued that Trump had abandoned the original Iran deal “not because it had failed, but because it was President Barack Obama’s achievement,” and that the result was “an unconstrained Iranian nuclear program and a far more dangerous Middle East.”
The broader war has drawn in a wide array of countries and interests since it began in late February. According to background compiled on the conflict, the fighting has involved the United States, Israel, Saudi Arabia, the United Arab Emirates, and Kuwait on one side, and Iran along with allied regional militias including Hezbollah and the Houthis on the other, with Iran responding to the initial strikes with missile and drone attacks on Israel, U.S. bases, and Gulf states, as well as a closure of the Strait of Hormuz that disrupted global trade.
Independent assessments of the nuclear question have largely lined up with Beyer’s framing of the original deal’s effectiveness. National security experts cited in reporting on the war have said the JCPOA, whatever its imperfections, succeeded in halting Iran’s advance toward proliferation and in enabling international monitoring of its nuclear activities, and that Iran ramped up uranium enrichment and curtailed inspections only after the U.S. withdrawal.
Trump has offered a different account of the same history, telling reporters in remarks after the February strikes that the 2015 deal was “the worst deal I’ve ever seen” and that Iran would have been “sitting with a massive nuclear weapon three years ago” had he not terminated the agreement in 2018. He has said the weapon “would have been used already on Israel… and other countries also” had the deal remained in place.
Fact-checking organizations have disputed elements of that account. FactCheck.org has reported that experts say Iran’s enrichment activity accelerated after the U.S. withdrawal rather than before it, undercutting the premise that leaving the deal prevented Iranian nuclear progress.
Sunday’s post did not announce new legislative action or reference a specific upcoming vote, but it reiterates a position Beyer has held consistently and publicly since 2015: that the Iran nuclear file was better managed through the negotiated, monitored framework Obama’s administration built than through the military and sanctions-based approach Trump has pursued since 2018. As the war grinds on without a comprehensive resolution to the nuclear question that started it, Beyer’s post signals that the diplomacy-versus-war argument between the two men’s approaches remains a live fault line in Washington’s debate over how the conflict should end.