In a significant legislative push, U.S. lawmakers are calling on European allies to invoke the “snapback” mechanism to reinstate United Nations sanctions on Iran. The bipartisan initiative, led by Senator Pete Ricketts (R-NE) and backed by a group of Republican senators, aims to counter Iran’s nuclear advancements and its alleged support for terrorist organizations.
The Legislative Initiative
Senator Ricketts introduced the bicameral legislation, urging the United Kingdom, France, and Germany—collectively known as the E3—to reimpose sanctions that were lifted under the 2015 Joint Comprehensive Plan of Action (JCPOA). Representatives Claudia Tenney (R-NY-24) and Josh Gottheimer (D-NJ-05) introduced a companion bill in the House of Representatives.
“Iran is the leading state sponsor of terrorism, and their actions have led to the murder of American servicemembers,” said Senator Ricketts. “Iran’s possession of a nuclear weapon would threaten our security and the security of our allies. Snapback sanctions are key to ensuring that President Trump’s maximum pressure campaign is successful. This legislation delivers a strong message to our European allies. They need to step up.”
The Case for Sanctions
The legislation argues that Iran has repeatedly violated the JCPOA by resuming its nuclear activities, enriching uranium up to 60% purity—just short of weapons-grade levels—and limiting independent inspections of its facilities. These actions, according to lawmakers, justify the immediate reinstatement of sanctions under U.N. Security Council Resolution 2231.
Under the Trump administration, the U.S. withdrew from the JCPOA and imposed its own “maximum pressure” sanctions on Iran. The Biden administration initially attempted to negotiate a return to the agreement but later abandoned those efforts. Meanwhile, Iran continued to expand its nuclear program and bolster support for proxy groups such as Hezbollah, Hamas, Palestinian Islamic Jihad, and the Houthis.
Rep. Tenney emphasized the urgency of the situation: “In contrast, within his first month in office, President Trump has taken decisive action to counter Iran’s malign influence and has pledged to reinstate his Maximum Pressure campaign. However, our E3 allies must invoke snapback sanctions on Iran before the ability to do so expires this October.”
The Role of European Allies
Britain, France, and Germany previously signaled their willingness to trigger snapback sanctions if Iran continued violating the agreement. However, no concrete action has been taken. The new U.S. legislation puts additional pressure on European nations to act decisively before the deal’s sunset provisions expire in October 2025.
“We cannot forget where the money ends up when sanctions are lifted on Iran—the world’s leading state sponsor of terror,” said Rep. Gottheimer. “The Iranian regime continues to finance a robust network of terrorist proxies, while actively trying to jumpstart their nuclear program. These actions pose a grave threat to the security and stability of the Middle East, our key democratic ally Israel, and the entire world.”
Potential Global Implications
If European allies agree to reinstate sanctions, Iran would face renewed restrictions on its oil exports, travel bans, and asset freezes targeting individuals and entities involved in its nuclear and missile programs. This could further strain Tehran’s economy, which is already grappling with domestic unrest and economic instability.
Iran’s Supreme Leader Ayatollah Ali Khamenei dismissed the prospect of negotiations with the U.S., stating, “No problem will be solved by negotiating with America.” Instead, he called for further strengthening Iran’s military capabilities, insisting that the country’s defense power must continue to grow.
As the October deadline approaches, the U.S. Congress is intensifying its calls for action. With bipartisan support, the proposed legislation aims to rally European partners to confront Iran’s nuclear ambitions and destabilizing activities before it is too late.
