The U.N. peacekeeping forces first deployed along the frontier in 1974 following an agreement to separate Syrian and Israeli forces after Israel occupied the Golan Heights in the 1967 war.
Israel tracked the armed infiltrators who approached the border on Wednesday night and a military aircraft struck as they attempted to cross a security fence on the Israeli side of the frontier.
The peacekeeping mission was halted in 2014, over security concerns, amid the violence in Syria's civil war.
In Moscow, the Russian Defence Ministry said its deployment of military police on the Syrian-held Golan was aimed at supporting a decades-old United Nations peacekeeper presence (see story on page 4).More news: OH offers sales tax holiday this weekend
Russian Federation demanded the immediate access by global humanitarian entities to the Rukban refugee camp, where it is suspected that the Pentagon carries out recruitment work among civilians to make up radical groups.
Syrian air defenses had downed a "hostile target" west of the capital Damascus, state media reported on Thursday.
During their summit in Helsinki, Russian President Vladimir Putin and President Donald Trump said they were exploring ways to protect Israel from the war in Syria.More news: National Archives: We can't produce all Kavanaugh docs until end of October
When asked whether Israeli forces should be less wary about possible tension in the Golan Heights, the top official answered: "I believe so". He said a preliminary assessment was that the infiltrators were Islamic State in Iraq and Syria (ISIS) militants. The army's announcement came shortly after Defence Minister Avigdor Lieberman toured a Patriot missile defence battery in northern Israel during a military preparedness drill. The Syrian government says Israeli attacks are helping only terrorists and that the only Iranian troops on the ground in Syria are advisers helping the Syrian Arab Army fight jihadists.
He said Israel will not accept any changes to the 1974 deal or the presence of any Syrian troops or allied militias inside the disengagement zone.More news: US Announces $113 Million In Initiatives In Indo-Pacific To Counter China