White House envoy Amos Hochstein spoke in Beirut following talks with parliament Speaker Nabih Berri, a day after the Lebanese government and Hezbollah agreed to a US ceasefire proposal with some comments on the content.
"I came back because we have a real opportunity to bring this conflict to an end," Hochstein told a press conference after the meeting.
"It is now within our grasp. As the window is now, I hope the coming days yield a resolute decision."
Residents in Israel and Lebanon have been affected by the war between Israeli forces and Hezbollah. (AP PHOTO)
Hochstein's mission marks a last-ditch attempt by the outgoing US administration to clinch a ceasefire in Lebanon as diplomacy to end the war in the Gaza Strip appears totally adrift.
Israeli Energy Minister Eli Cohen said on Tuesday "there are talks regarding an arrangement with Lebanon" but reiterated that Israel would agree only if all its demands were met, including pushing Hezbollah away from the border.
The diplomatic efforts coincide with an intensification of the war, with Israel stepping up its strikes on Beirut's Hezbollah-controlled southern suburbs and striking three times in the capital itself in the last three days.
The conflict spiralled into all-out war in September when Israel went on the offensive, pounding wide areas of Lebanon with air strikes, sending troops into the south and killing many Hezbollah commanders including leader Hassan Nasrallah.
During the conflict, 10,000 peacekeepers have been serving in southern Lebanon with the United Nations peacekeeping mission known as UNIFIL, despite it coming under fire several times.
UNIFIL said peacekeepers and facilities had been targeted in three separate incidents on Tuesday, and that four Ghanaian peacekeepers were wounded when a rocket hit their base in southern Lebanon.
It said the rocket was most likely fired by "non-state actors".
Hochstein has tried to broker a ceasefire several times over the last year.
Hezbollah has endorsed its long-time ally Berri as Lebanon's negotiator.
Hochstein flew to Beirut overnight after Lebanon delivered its written response to a US ceasefire proposal which Berri received last week from the United States ambassador.
Israel launched its offensive after almost a year of cross-border hostilities with Hezbollah, which opened fire in solidarity with its Palestinian ally Hamas after the group's October 7, 2023 attack on Israel led to the start of the Gaza war.
Israel's declared goal is to dismantle Hezbollah's capabilities and secure the return of tens of thousands of Israelis who fled from the north.
An Israeli strike killed two people in the Chiyah district of Beirut's southern suburbs, the Lebanese health ministry said.
At least 35 projectiles were fired into Israel from Lebanon on Tuesday, some of which were intercepted, according to Israeli military statements.
The Israeli air force also intercepted two drones flown into Israel from Lebanon, the military said.
Cohen, speaking at a conference on Tuesday, said Israel would "make an arrangement only if all our demands are met".
He said this meant pushing back Hezbollah, ensuring it cannot return and regain strength, Israelis being able to return safely to the north and Israeli forces having "full freedom of action, not just in the event of an attack, but in the event they (Hezbollah) try to restore their strength".
Israel's campaign in Lebanon has uprooted more than a million people in the last eight weeks.
World powers say a ceasefire must be based on United Nations Security Council Resolution 1701 which ended a 2006 war between Israel and Hezbollah.
Its terms require Hezbollah to move weapons and fighters north of the Litani River, about 30km north of the Israeli border.
Ali Hassan Khalil, a top Berri aide, told Reuters on Monday that Lebanon had presented its comments on the US proposal in a positive atmosphere
"All the comments that we presented affirm the precise adherence to Resolution 1701 with all its provisions," he said, declining to give details.
Israel's campaign has killed 3481 people in Lebanon since hostilities began, most since late September, Lebanese authorities say.
The figures do not distinguish between combatants and civilians.
Hezbollah strikes have killed 43 civilians in northern Israel and the Israeli-occupied Golan Heights while 73 soldiers have been killed in strikes in northern Israel and the Golan Heights and in combat in southern Lebanon, according to Israeli figures.
