The colors that ruled Lebanon’s border

Source: Nida Al Watan

Israel chose the color yellow, widely associated with Hezbollah, to redraw by fire the boundary separating it from Lebanon. Through what has recently been described as a “yellow line,” it sent a message to Lebanese citizens in general, and to Hezbollah’s support base in particular: this is what your yellow has brought upon you.

This so-called yellow line is unlikely to appear on any official map. Yet it is clearly visible in the stretch of destruction across border villages. It has become less a cartographic concept than a description of emptied towns, abandoned homes, suspended sovereignty, and hopes now tied to negotiations for recovery.

Israel imposes a new formula

Although Israel has not formally declared the annexation of villages said to fall inside this line, maps circulating in the media reflect an Israeli vision for protecting its northern frontier through incursions reaching around twenty kilometers into Lebanese territory.

That would take Lebanon back to the era before the 2000 withdrawal, shifting it from the phase of the Blue Line to the era of the security strip. That strip once extended between ten and twenty kilometers into southern Lebanon before collapsing in 2000 and being replaced by the Blue Line.

The yellow line may simply be the latest chapter in a long history of borders drawn by force, then reshaped by changing balances of power.

Borders never truly settled

Since the era of the French Mandate, Lebanon’s borders have never fully stabilized.

According to historian and border expert Issam Khalife, the problem has never been geography itself. Borders did not create the conflicts from the south, east, or north. The real issue, he argues, has always been ambitions directed at Lebanon.

Khalife says all lines drawn on Lebanon’s southern border, regardless of their color, amount to occupation and must be rejected. For him, Lebanon’s only legitimate reference remains the internationally recognized border established under the Paulet–Newcombe Agreement, signed between France and Britain in March 1923 and ratified by the League of Nations in February 1924.

That border was later reaffirmed through the 1949 Lebanon-Israel Armistice Agreement signed on March 23, 1949.

The security strip era

The international line established under the armistice was meant to be a final border. But tensions in the 1960s, followed by the expansion of Palestinian armed groups into Lebanon, quickly turned that frontier into a vulnerable zone.

The border effectively collapsed during Operation Litani, Israel’s first large-scale war in Lebanon aimed at removing Palestinian militants and creating a buffer zone.

This was followed by the 1982 invasion, which cemented the security strip deep inside southern Lebanon. The area was administered through the South Lebanon Army with direct Israeli backing for nearly eighteen years.

Control during that period was not only military. It was social and economic as well. Movement required Israeli-issued permits. Villages were split between those inside and outside the zone. Security posts, checkpoints, and surveillance positions defined daily life.

Despite this, the strip gradually eroded under sustained attacks until it collapsed in 2000.

The Blue Line and fragile calm

Before Israel’s withdrawal, unwritten rules of engagement had already emerged, especially after Operation Grapes of Wrath.

That conflict ended with an informal understanding not to directly target civilians, effectively creating invisible red lines that limited, but did not end, violence.

When Israel withdrew in 2000, a new line was established under United Nations supervision: the Blue Line.

But the Blue Line was never a final international border. It was a technical line verifying Israeli withdrawal based on earlier maps and agreements. UNIFIL was tasked with monitoring, documenting, and mediating in what remained a fragile security arrangement.

Lebanon maintained thirteen reservation points along the line, most notably the Shebaa Farms. This gap between the UN line and Lebanon’s claimed international border gave continued political justification for maintaining armed resistance.

Enter the era of international resolutions

Tensions did not disappear after the Blue Line.

Between 2000 and 2006, informal deterrence rules held until they collapsed in the 2006 Lebanon War.

After thirty-four days of war, a new framework emerged under United Nations Security Council Resolution 1701.

The resolution was supposed to define the combat boundary between Lebanon and Israel. It required the deployment of the Lebanese Army south of the Litani River, the absence of unauthorized weapons, and a stronger role for UNIFIL.

Yet implementation remained partial. So too did United Nations Security Council Resolution 1559, which called for the disbanding of militias, full state authority across Lebanese territory, and the withdrawal of foreign forces.

The ball is now in Lebanon’s court

The Blue Line became increasingly symbolic during the tensions surrounding the Gaza support front.

That opened the door for Israel to revive the logic of a security strip without the cost of a full ground advance. What is now described as the yellow line appears as an extension of older border formulas that have repeatedly changed names and colors, but never fully disappeared.

Yet this moment also coincides with the start of what could become historic negotiations between Lebanon and Israel aimed at ending the current conflict.

For the first time since the 1949 armistice, the Lebanese state itself is directly leading the negotiating track.

That, many argue, should be an opportunity to return to the original foundation repeatedly bypassed over decades: the 1949 Armistice Line, rooted in the Paulet–Newcombe Agreement that first defined the modern borders of Lebanon.