When Israel withdrew from south Lebanon in May 2000, the UN drew a blue line to divide the two countries. But in drawing this line, it placed a region called the Shebaa Farms - a sliver of land between Lebanon and Syria - outside of Lebanon and within the Syrian Golan Heights, which are currently occupied by Israel.

Lebanon says it owns the Shebaa Farms and Syria agrees. But the UN has ruled that it belongs to Syria and Israel says it will only withdraw from the area via negotiations with Syria.