Israel Pushes Beyond Litani River in Largest Lebanon Operation Since 2006
Five-division incursion threatens US-Iran ceasefire talks and sends oil prices toward $90 as regional energy infrastructure faces escalating security risks.
Israel’s military captured Beaufort Castle on May 31 and expanded operations beyond the Litani River in southern Lebanon, deploying five divisions in the largest ground operation since the 2006 war and threatening fragile ceasefire negotiations between the United States and Iran.
The incursion, which Israeli Prime Minister Benjamin Netanyahu ordered deepened on May 31, marks a significant escalation three months after Hezbollah resumed rocket attacks on March 2 in retaliation for the killing of Iranian Supreme Leader Ali Khamenei, according to CNN. Netanyahu stated his directive was to “deepen and expand our hold on areas that had been under Hezbollah’s control,” as forces raised Israeli flags over Beaufort Castle approximately nine miles from the border.
Five Divisions Push North
Israel deployed its 98th, 36th, 91st, 146th, and 162nd divisions into southern Lebanon. The operation has killed at least 3,213 people and wounded over 9,700 since March 2, according to Euronews data from May 27, while displacing more than one million Lebanese civilians.
A senior Israeli official told Axios the goal was to “take over territory, push Hezbollah’s forces north and away from the border, and dismantle its military positions and weapons depots in the villages.” Another Israeli official confirmed to the same publication: “We feel we have full U.S. backing for this operation.”
“Now my directive is to deepen and expand our hold on areas that had been under Hezbollah’s control.”
— Benjamin Netanyahu, Prime Minister of Israel
Ceasefire Collapse Threatens Regional Stability
The escalation jeopardizes a US-brokered ceasefire announced in mid-April 2026 and complicates ongoing negotiations for a broader US-Iran agreement. According to CNN, “the intensifying combat between Israel and Hezbollah may put at risk any agreement between the United States and Iran, which is insisting that it include a ceasefire in Lebanon.”
Hezbollah Secretary-General Naim Qassem responded to Israeli advances by declaring “there is no solution except resistance,” while the group launched an estimated 105 attack waves on Israel during the conflict’s most intense day in late May. Israeli Defence Minister Israel Katz warned Hezbollah against escalation, telling Al Jazeera the group was “playing with fire … [that] will burn Hezbollah and all of Lebanon.”
Energy Markets Price Regional War Premium
Oil Prices surged as markets absorbed escalation risks in a region already destabilized by the February-March Iran war. West Texas Intermediate rose 2.48% to $89.53 per barrel while Brent crude climbed 2.12% to $93.05, according to Global Banking and Finance Review data from June 1.
Iran’s effective closure of the Strait of Hormuz since February has already disrupted approximately 13 million barrels per day of supply, creating what IEA chief Fatih Birol described to CNBC as the “biggest energy security threat in history.” The Lebanon escalation compounds pressure on Suez Canal shipping routes, which saw traffic drop approximately 50% due to the combined impact of Gaza and Iran conflicts before the latest Israeli operation.
Egypt lost approximately $10 billion in Suez Canal revenues due to Gaza war disruptions, Asharq Al Awsat reported in March. The Lebanon escalation threatens further revenue erosion as shipping companies reroute around Africa to avoid Eastern Mediterranean risks.
Eastern Mediterranean Gas Infrastructure at Risk
Israel’s deepening military presence in southern Lebanon raises security concerns for Eastern Mediterranean energy investments, including the Israeli-operated Leviathan and Tamar gas fields, Egyptian LNG export terminals, and proposed maritime boundary agreements between Israel and Lebanon. The escalation creates uncertainty for tens of billions of dollars in planned infrastructure development in a region that has emerged as a critical alternative to Russian gas supplies for European markets.
The operation also threatens Syria-based Iranian military positions, potentially activating the broader Iran-Syria-Hezbollah axis despite the nominal US-Iran ceasefire. This risk multiplier could extend conflict dynamics beyond Lebanon’s borders into a multi-front regional war.
What to Watch
Monitor whether Netanyahu’s expansion triggers a formal breakdown of US-Iran ceasefire talks, scheduled to resume in early June. Track whether Hezbollah escalates beyond current rocket attack levels to deploy advanced drone or missile capabilities demonstrated in late May operations. Watch for Iranian naval movements in the Strait of Hormuz—any further restriction would push Brent above $100. European gas futures will signal whether markets are pricing in Eastern Mediterranean supply disruption beyond current levels. Finally, Egyptian statements on Suez Canal security and revenue projections will indicate whether Cairo expects prolonged regional instability to extend shipping disruptions into the second half of 2026.