Speaking Sunday at an Israeli Cabinet meeting, Netanyahu said: "Just in the last 36 hours the air force attacked Iranian warehouses containing Iranian weapons in the Damascus global airport".
The tunnel, the second discovered coming from the Lebanese town of Ramieh, went 180 feet deep and crossed 2,624 feet of Lebanese territory and dozens of yards into Israel.
Israel and Hezbollah last fought a war in 2006.
The United States will step up efforts to counter Iran's "dangerous activities" around the region, including the financing and activities of proxy organizations such as Lebanon's Hezbollah, a senior USA official said Monday.
"We have found yet another Hezbollah cross-border attack tunnel from Lebanon to Israel", Lieutenant Colonel Jonathan Conricus told reporters of the operation that began on December 4.
Eisenkot also said Israel needed to focus on Iran as opposed to secondary enemies such as Hamas in Gaza. Conricus says the United Nations peacekeeping mission, known as UNIFIL, had been updated on the latest development.
Saudi refugee welcomed to Canada by its foreign minister
Thailand's immigration police chief says a Saudi woman who fled alleged abuse by her family will leave Bangkok for Canada. The UNHCR welcomed Canada's decision and also acknowledged Thailand had given Qunun temporary refuge.
Citing intelligence assessments, Israel says the tunnels were prepared in secret, over a period of years, as part of a Hezbollah plan to send as many as 1,500 fighters in a shock assault on its northern communities and military bases during any future war.
The outgoing IDF chief of staff has acknowledged that Israel has been bombing Syria on a "near-daily" basis for years, in a massive military campaign allegedly aimed at degrading Tehran's supposed military buildup in the region.
"We'll continue our engineering actions along the border and tracking Hezbollah's underground activities".
The US Embassy also said in its statement that Hale "will meet with senior Lebanese officials to discuss the full range of bilateral and regional issues".
In an interview with The New York Times, the general said that Israel had carried out attacks on "thousands of [Iranian] targets without claiming responsibility or asking for credit".
Israel has pledged to prevent its main enemy Iran from entrenching itself militarily in Syria, where it is backing President Bashar al-Assad's regime alongside Russian Federation and Hezbollah.
He pledged continued support for the Lebanese military and security forces and said that while Lebanon has the right to defend itself, "that is the right of the Lebanese state alone".