Zarif sent two separate messages to his Lebanese counterpart Gebran Bassil and Hezbollah Secretary General Sayyed Hassan Nasrollah and felicitated them on the 17th anniversary of Israel's withdrawal from Southern Lebanon.
After 19 years of fights and occupation of the Southern areas of Lebanon, the Israeli regime retreated from the Arab country on May 25, 2000, after being defeated by Hezbollah forces.
In relevant remarks in mid-March, Lebanese Defense Minister Yacob Sarraf lauded Iran for its ongoing support for his country in the war against the terrorist groups.
"We appreciate Iran for its role in helping the Lebanese government and nation to confront the terrorists," Sarraf said in a meeting with Iranian Ambassador to Beirut Mohammad Fathali in the Lebanese capital.
Fathali, for his part, underlined support for Lebanese nation, army and resistance, and said, "Iran will continue its support for the Lebanese nation and government."
The two sides also discussed ways to develop cooperation between the two countries.
Lebanon has been suffering from terrorist attacks by Al-Qaeda-linked and ISIS terrorists in the past few years after the crisis in Syria erupted.
Late 2014, Secretary of Iran's Supreme National Security Council (SNSC) Ali Shamkhani stressed that the Islamic Republic would not hesitate to provide military contribution to the Lebanese Army to help the Arab country in its fight against terrorism.
Ali Shamkhani stressed that Iran had remained committed to the promise it had made to the Lebanese Army about gifting a consignment of military contributions to Lebanon to be used in anti-terrorist campaign.