Israel, Turkey and the U.S. have all targeted the Syrian President Bashar al-Assad's air force, but the longtime leader stands to regain the whole country.
As the Syrian military retakes the city where a nationwide rebellion was sparked, Israel prepares to enforce the land it seized in 1967.
Syria and Israel have been technically at war since 1948 and have fought at least three major conflicts, including in 1967 when Israel seized the Golan Heights.
Opposition negotiator Nasr al-Hariri said such "U.S. silence" could only be due to a "malicious deal" made between foreign powers involved in Syria's war.
The Syrian military and the Syrian Democratic Forces are both advancing rapidly against the last of ISIS. What happens when the jihadis are gone?
Syria is reclaiming one of its final rebel-held regions, but Israel has reportedly continued to strike Iranian assets in the heart of the war-torn country.
The U.S. may reportedly dismantle its Al-Tanf base in exchange for a withdrawal of both pro-Assad and anti-Assad militias, leaving the Syrian army in control.
A New York Times report revealed the battle between the U.S.-led coalition and pro-Syrian government fighters in dramatic detail.
As the Syrian military and its allies advance on the ISIS' last stronghold south of Damascus, the jihadis' tactics grow more bloody.
ISIS has agreed to surrender its final stronghold south of Damascus, but the Syrian military and allies continue to fight until talks are finalized.
The Syrian military has forced the insurgents of eastern Ghouta to either surrender or leave, but pro-Assad forces expected a fight with ISIS in the south.
Tensions between local and international actors have led to nonstop violence and more than 500,000 deaths, but there are some signs of rehabilitation.
The Kurdish majority of the Pentagon-created Syrian Democratic Forces are leaving the U.S. battle against ISIS to fight a Turkish invasion.
Russian Deputy Foreign Minister Sergey Ryabkov said U.S. military action against the Syrian military would be "unlawful."
The axis of Russia, Iran and Syria faced attacks from Turkey in Afrin and Western pressure to cease bombing rebels in eastern Ghouta.
One leading Russian senator said, "It would be good if the Americans, along with us, took part in liberating eastern Ghouta from the terrorists."
"The actions of the U.S. coalition do not comply with legal norms. Beyond all doubt, it is an unprecedented act of aggression," one Russian senator said.
An account affiliated with Turkey's so-called Operation Olive Branch claimed Kurdish fighters attacked the Free Syrian Army with chlorine gas.
As Kurdish forces attempt to defend their land from Turkey, Russia began the Sochi peace conference and its allies continued to gain ground.
As a Turkey-backed offensive neared Manbij, Syria, the head of U.S. Central Command said withdrawal was "not something we are looking into."
After ISIS was mostly defeated in the east, the Syrian military set its sights on rebel-held Idlib, while Turkey targeted U.S.-backed Kurds in Afrin, Aleppo.
A year after winning Aleppo, the Syrian military and its Russian ally launched a devastating offensive against the last rebel province of Idlib.
"It was all theater," said the U.S.-backed commander who has since switched his allegiance to Turkey.
As Tu-22M3 supersonic bombers blasted the last of ISIS in Syria, Russia announced the new Tu-22M3M fitted with missiles that can soar 130,000 feet and attack 620 miles away.