As it became clear that the forces of dictator Bashar Assad would reconquer the south of Syria, those same nations lobbied Israel and Jordan to help get them out, with the promise that the White Helmets and their families could then take up residence in the West.
In a statement on Sunday, the Israeli military said it had completed "a humanitarian effort to rescue members of a Syrian civil organisation and their families. due to an immediate threat to their lives".
Israel has been sending medical aid to civilians who have fled fighting in the Syrian-controlled part of the Golan Heights. "The number requested was 800 but the actual number settled at 422", he added. They have reached Jordan, thank God. They were besieged in a very risky area.
The White Helmets confirmed in a tweet Sunday that volunteers and their families were evacuated to Jordan for "purely humanitarian" reasons after becoming "trapped in a risky area".
Since the Syrian government offensive began in June, the area along the frontier in the Golan Heights has been the safest in the southwestern region, attracting hundreds of displaced because of its location along the disengagement line with Israel, demarcated in 1974 after a war.
However, Syrian President Bashar al-Assad and his allies - including Russian Federation - have said they see the White Helmets as proxies of Islamist-led insurgents and Western-sponsored propaganda tools.
Israel confirmed the evacuation and said that the transfer was an "exceptional humanitarian gesture" done at the request of the "United States and additional European countries".
The civilians' passage out of Syria was organized by the UN, Petra reported. Mr Saleh said that a number were trapped between the border with the Golan Heights.
German weekly magazine Bild, which broke news of the evacuation and published footage of buses used to transport the Syrians across Golan, said 50 of them would be granted asylum by Berlin.
Welcoming their evacuation, Foreign Secretary Jeremy Hunt tweeted: "Fantastic news that we - United Kingdom and friends - have secured evacuation of White Helmets and their families - thank you Israel and Jordan for acting so quickly on our request".
"The [White Helmets] are the bravest of the courageous and in a desperate situation this is at least one ray of hope", added Hunt.
"The request was approved based on pure humanitarian reasons", ministry spokesman Mohammed al-Kayed said.
Canadian foreign minister Chrystia Freeland said in a statement that "Canada, working in close partnership with the United Kingdom and Germany, has been leading an worldwide effort to ensure the safety of White Helmets and their families".
Who are Syria's White Helmets?
Canada's Minister of Foreign Affairs, Chrystia Freeland, also praised the evacuation and said her country had provided funding to the volunteer group.
Volunteers of White Helmets search for survivors after an explosion in the city of Idlib, Syria, on April 9, 2018.
CNN's Oren Liebermann reported from Jerusalem, Sheena McKenzie wrote in London.