The United States’ decision to formally emphasize Hezbollah’s subordination to Iran’s Islamic Revolutionary Guard Corps could prove more consequential than another round of sanctions, potentially reshaping how Washington approaches the Lebanese group and the unresolved question of its weapons.

On August 20, the U.S. Treasury Department redesignated Hezbollah, saying the Lebanese group operates “for service to the Iranian regime under the command of Iran's Islamic Revolutionary Guard Corps-Quds Force.” The move reinforced Washington’s longstanding terrorist designations against Hezbollah while placing its relationship with Iran’s security establishment at the center of the U.S. rationale. 

The immediate purpose was to disrupt Hezbollah’s financing and impose additional pressure on its international networks. But the wording raises a broader political question: If Washington considers Hezbollah not simply an Iranian-backed Lebanese organization but an actor operating under the command of Iran’s Quds Force, does that mean the key to resolving the Hezbollah issue lies not only in Beirut, but also in Tehran?

That question has become particularly relevant as Lebanon and Israel struggle to make progress in U.S.-mediated negotiations over an Israeli withdrawal from southern Lebanon and the disarmament of Hezbollah.

The latest round of talks in Rome, held in early August, was the seventh since the negotiations began. A framework agreed in June envisaged a gradual Israeli redeployment, the deployment of the Lebanese army and the dismantling of Hezbollah’s military infrastructure in designated “pilot zones.” But the two sides remained divided over the pace and conditions of an Israeli withdrawal and the mechanisms for verifying Hezbollah’s disarmament. 

Against that backdrop, the Treasury’s language can be read as more than a financial measure. It could signal an effort by Washington to redefine the political framework in which Hezbollah is addressed.

From a Lebanese issue to an Iranian one

For years, the United States has treated Hezbollah as both a Lebanese political party and an armed organization backed by Iran. The new designation places greater emphasis on the latter relationship, explicitly tying the group to the Quds Force and describing it as operating on behalf of the Iranian government.

That distinction matters.

If Washington believes that Iran exercises decisive influence over Hezbollah’s military decisions, then an eventual U.S.-Iranian understanding on regional security could have consequences for Lebanon even if Hezbollah itself were not a party to such an agreement.

That would not mean that an agreement between Washington and Tehran could automatically bind Hezbollah under international law. Hezbollah is a non-state actor and would not become legally bound by an agreement between two governments simply because one of those governments exercises influence over it.

The issue, however, is fundamentally political.

If Washington itself describes Hezbollah as operating under Iranian command, it raises the question of whether the United States might eventually view the group less as an independent Lebanese negotiating actor and more as one component of Iran’s regional network.

That could provide Washington with another avenue for addressing a problem that the Lebanon-Israel negotiating table has struggled to solve.

The dilemma facing Lebanon

Such an approach would also allow the United States to avoid a difficult diplomatic contradiction.

Washington does not negotiate with Hezbollah, which it has designated as a terrorist organization. At the same time, if the group’s weapons and military decisions are considered closely linked to Tehran, Washington could seek to address the Iranian dimension of the problem directly with Iran without giving Hezbollah an independent seat at the negotiating table.

In practical terms, the formula could be: Washington does not negotiate with Hezbollah as a state or recognize it as an equal diplomatic party. Instead, it negotiates with Iran over Tehran’s regional influence and its ability to shape Hezbollah’s conduct.

That would represent a significant change in the way the Lebanese file is viewed.

Rather than requiring a three-way negotiating structure involving Lebanon, Israel and Hezbollah, Washington could divide the problem into two tracks: negotiations between Lebanon and Israel over territory, security and the role of the Lebanese army, and a broader U.S.-Iranian effort addressing Tehran’s influence over Hezbollah.

The United States would not, in that scenario, be granting Hezbollah greater legitimacy. It would be doing the opposite — defining it as a non-state actor whose military capabilities are linked to another state.

What happens to the Lebanese state?

But that approach carries risks for Lebanon.

On one level, Washington’s characterization of Hezbollah as operating under Iranian command could strengthen the Lebanese government’s argument that it cannot resolve the weapons issue entirely on its own. If Iran is ultimately considered a decisive source of Hezbollah’s military capabilities and decision-making, then pressure on Beirut alone may not be enough.

That could strengthen the case for an international effort aimed at addressing the Iranian dimension of the problem.

Yet there is another danger: Lebanon could become the arena in which understandings reached between larger regional and international powers are implemented, while the Lebanese state has limited influence over the substance of those understandings.

That would be particularly problematic for a country seeking to restore state sovereignty over all of its territory.

Any U.S. effort to address Iranian influence in Lebanon should therefore ultimately strengthen Lebanese institutions rather than bypass them.

If Washington intends to use its relationship with Tehran to pressure Hezbollah, a critical question remains: Can Iran actually deliver what the Lebanese state has been unable to deliver?

And even if Tehran were prepared to use its influence, could it guarantee that an understanding reached with Washington would be implemented by Hezbollah in Lebanon?

There is no clear answer.

A new negotiating equation

The timing of the U.S. redesignation is nevertheless striking.

It came shortly after another round of U.S.-backed Lebanon-Israel talks in Rome, where Hezbollah’s weapons remained one of the most difficult issues. The negotiations ended without resolving the central dispute over Israeli withdrawal and the implementation of Hezbollah’s disarmament. 

The new U.S. language therefore raises the possibility that Washington is beginning to view the Hezbollah question through a broader regional lens.

The question may no longer simply be whether the United States will ever negotiate with Hezbollah.

It may instead be whether Washington believes that the key to dealing with Hezbollah is in Tehran.

If that is the emerging U.S. calculation, the implications for Lebanon could be substantial.

Hezbollah would increasingly be treated not merely as a domestic Lebanese actor complicating negotiations, but as part of a wider Iranian regional network. That could make the group’s weapons a component of a much larger discussion about Iran’s influence across the Middle East.

For Lebanon, the challenge will be to benefit from any regional arrangement that helps restore the state’s monopoly over weapons without allowing Lebanese sovereignty itself to become a bargaining chip between Washington and Tehran.

The distinction is crucial.

If the key to Hezbollah lies in Tehran, the key to Lebanon must remain in Beirut.

This is the English adaptation of an Arabic article featured in Nidaa Al-Watan newspaper.