A picture taken from the southern Lebanese village of Meiss al-Jabal on December 16, 2018, shows United Nations Interim Forces in Lebanon (UNIFIL) soldiers patroling on the Lebanese side of the border with Israel.  Israel's army said it has uncovered another Hezbollah "attack tunnel" leading from Lebanon into its territory, the fourth since it started a search-and-destroy operation this month. / AFP / Mahmoud ZAYYAT
UN peacekeepers patrolling the Lebanese side of the border with Israel. AFP

UNIFIL expresses 'serious concern' over Hezbollah tunnels as tensions flare along border