Lebanon has received a stern warning from Washington that any military intervention by Hezbollah on Iran's behalf in the event of a new U.S.-Iran conflict would trigger devastating consequences for both the group and the country, according to Nidaa Al-Watan.

According to the newspaper, Beirut was recently informed through U.S. channels that Hezbollah's involvement in any future confrontation would carry an exceptionally heavy price.

The warning reportedly added that, under such circumstances, Israeli Prime Minister Benjamin Netanyahu would no longer be constrained by U.S. diplomatic efforts, nor would President Trump intervene on behalf of the Lebanese government to broker a ceasefire. Instead, the report said, a decision would already have been made to crush Hezbollah and its allies with full U.S. backing.

Washington also warned Lebanese officials that Netanyahu has been waiting for such a scenario and could seize on any Hezbollah attack as justification for launching a broader military campaign. According to the report, the Israeli leader remains unconvinced by the current diplomatic track and has accepted it only because of exceptional pressure from Trump.

The message was also conveyed to Hezbollah through the Lebanese State and Parliament Speaker Nabih Berri, meaning the group has been made fully aware of the U.S. warning, the report said.

The reported warning comes as the Lebanese file has moved to the forefront of regional and international diplomacy, emerging as one of the key issues expected to be discussed during Trump's meeting with Netanyahu at the White House on Monday.

The summit is widely viewed as a pivotal moment that could shape the next phase of developments not only in Lebanon but also in Iran, Gaza, and Syria.

Its outcome is also expected to influence the next round of U.S.-mediated Lebanese-Israeli negotiations scheduled for Aug. 4 in Rome, where officials are expected to test whether the proposed framework agreement can move from political commitments to practical implementation.

At the center of those talks will be the proposed "pilot zones" in southern Lebanon, which are intended to serve as the first practical phase of Israel's withdrawal and the Lebanese state's reassertion of authority.

Attention is expected to focus on whether Israel proceeds with phased withdrawals and whether the Lebanese Army succeeds in removing illegal weapons from the designated areas.

In a notable development ahead of the negotiations, Israel's public broadcaster reported that the Lebanese Army had informed the coordination mechanism overseeing the ceasefire arrangements that it had discovered a Hezbollah weapons depot inside one of the pilot zones.

Another major issue expected to dominate the Rome talks is identifying the body that will verify implementation of the pilot-zone arrangement.

According to Nidaa Al-Watan, Lebanon continues to favor the United Nations Interim Force in Lebanon (UNIFIL) for that role. Israel, however, remains skeptical, citing what it views as shortcomings in the peacekeeping force's previous performance.

The United States has reportedly informed both Beirut and Tel Aviv that it does not intend to deploy American personnel in southern Lebanon to supervise the arrangement, citing the security risks U.S. forces have historically faced there.

Instead, discussions are reportedly focusing on coordinating with the commander of U.S. Central Command, Gen. Joseph Clairfield, to identify a third party that could carry out the monitoring mission. At the same time, there appears to be broad opposition to assigning that responsibility to UNIFIL.

Meanwhile, diplomatic activity surrounding Lebanon is expected to intensify in the coming days.

According to the report, Beirut may host a series of high-level Arab diplomatic visits this week, including Saudi envoy Prince Yazid bin Farhan and Qatari envoy Mohammed Al-Khulaifi.

President Joseph Aoun is also expected to travel to Turkey later this month for talks on regional developments and Lebanon's position amid the rapidly evolving geopolitical landscape.

Separately, the recent easing of tensions between the presidential palace in Baabda and Parliament Speaker Nabih Berri's residence in Ain el-Tineh is expected to culminate in a visit by Berri to Baabda in the near future.

According to the report, the meeting could result in Berri publicly endorsing Aoun's recent initiatives, reflecting an improvement in relations between the two leaders as Lebanon navigates an increasingly complex regional environment.