Here’s what you need to know about the foreigners in the Y.P.G. and what they are doing in Syria.
How are foreigners joining the militia?
Throughout the Syrian war, Kurdish militias have made themselves accessible to Westerners looking to join the fight, welcoming them to Syria and giving them training. The militia members have an active social media presence geared toward international recruits, and they regularly post updates, often in English, focusing not just on warfare but also on their vision for an autonomous Kurdish society. They call their movement the Rojava revolution, the name the Kurds have given to the region in northeastern Syria that they now control.
According to accounts from international fighters and their families, and the Y.P.G.’s own website, recruits make contact with a representative online, and then move the conversation onto encrypted messaging apps. There, they arrange travel to the area, typically entering Syria through the Kurdistan region of Iraq.
In August, recruiters sent a group message on WhatsApp urging “international volunteers who wants to join YPG/YPJ and SDF” to arrive in Iraqi Kurdistan before the end of the month. The message was signed, “Revolutionary regards.”
They do not head straight for the battlefield, however. Nouri Mahmoud, a spokesman for the Y.P.G. based in Ain Issa in northeastern Syria, said that foreigners join local Kurdish soldiers only after receiving ideological, military and language training. “They are trained on how to adapt to the communities,” he said.
How many foreigners are still with the Kurds?
Exact figures for those fighting with the Y.P.G., as well as with the broader Syrian Defense Forces coalition, are unclear. Mr. Mahmoud said that there were dozens of foreigners in the Y.P.G., but that he could not give an accurate total.
The State Department was equally vague when asked about the number of Americans who had traveled to Syria to join Kurdish militias.
“U.S. citizens are not required to register their travel to a foreign country with us, so we cannot track how many U.S. citizens have gone to a specific country,” a State Department spokesman said by email. “The U.S. government particularly warns private U.S. citizens against traveling to Syria to engage in armed conflict.”
But despite the risks, people have been making the trip for several years. Brusk Hasaka, a spokesman for the Syrian Defense Forces in Afrin, said that there were currently 150 foreign fighters in their ranks, which include Y.P.G. fighters.
“We have Americans, British, Japanese, Algerians — even Chinese,” Mr. Hasaka said, adding that many were eager to fight in Afrin. “It’s not obligatory for them, but they feel they have a duty toward us,” he said. “There is something called justice and injustice.”
Why has the Kurdish fight drawn in Westerners?
For many Westerners who joined Y.P.G., the leftist ideology of the so-called Rojava revolution was appealing. With a focus on women’s rights, democracy and freedom of religion, Kurdish forces envision being able to achieve a level of autonomy for Kurds in the region. Critics argue that their initiative in northern Syria could alienate or displace ethnic Arab communities.
Even though many Westerners who have joined the fight are not of Kurdish descent, they identify with the promise of a Kurdish state. Friends and family of Robert Grodt, an American who died while fighting for the Y.P.G. near Raqqa, Syria, in 2017, say he was driven to join the cause because he believed deeply in the leftist ideals of the Kurds.
Ron Kuby, a friend of Mr. Grodt and a lawyer representing his family, said Mr. Grodt had found meaning in the group.
“Rob felt a moral imperative to fight injustice and fight oppression and to work to build a better world, and certainly the Rojava revolution has attracted a number of people,” Mr. Kuby said in an interview shortly after Mr. Grodt’s death. “He was not a militarist, it was just a very a clear fight between right and wrong.”
Mr. Grodt’s mother and sisters said he believed in the politics of the movement and wanted to help build a Kurdish society. He initially told his family that he planned to be a medic and would not be on the front line, but that soon changed. In phone calls home, he described the “academy” in Syria where he received military training. He soon found himself fighting the Islamic State.
For those who do survive the war, more conflict could await them if they decide to return home. In both Britain and the United States, returnees face likely scrutiny from law enforcement agencies in connection with their time in Syria, and they could potentially face prosecution.
One of the men seen in two recent clips posted by the Y.P.G., identified by the BBC as a British citizen of Chinese descent named Huang Lei, said that he was aware of the possible legal consequences if he returned to Britain.
“I really hope I can return, but I don’t want to come back and get arrested,” Mr. Lei told the BBC. “I am here to fight against terrorists. I don’t want to come back home and become a terrorist.”
Contacted by phone, Mr. Lei confirmed that he had reached Afrin, but said that he was unable to say more because the area he was in had recently been bombed.