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On May 16, 2021, Sabreen News, a Telegram channel affiliated with Iran-backed militias in Iraq shared a video featuring Ayoob Falih Hasan Al-Rubaie, a commander in the Iran-backed Popular Mobilization Units (PMU), saying that Iraqi Shi'ite fighters had been deployed to help Palestinians in their ongoing fight against the Israelis.
The one-minute video showed Al-Rubaie, aka "Abu Azrael [i.e., Angel of Death]," confirming, without disclosing their location, that a contingent of fighters from the Sayyed Al-Shuhada' Battalions and Al-Nujaba Movement had been deployed already.
"Actually, there are brothers in the Sayyed Al-Shuhada' Brigades and Al-Nujaba [who answered the call] of Sheikh Akram Al-Ka'abi, who opened voluntary enlistment, which is now in progress... However, a batch of fighters were deployed already," he said.
He asked viewers to be patient and wait for further instructions, noting that he has not been deployed yet because the process of selecting the fighters who will be deployed depends on criteria determined by the "central command."
He noted that Shi'ite fighters are religiously obligated to adhere to the General Secretary's (i.e., Al-Ka'abi) orders and that once the latter gives the order to go, they must do so.
Abu Azrael concluded the video by noting that he is currently in Basra in southern Iraq.
Sabreen News included a caption with the video explaining that fighters from both factions "were sent to open a front in an undisclosed location to support the Palestinian people."
On May 12, 2021, Al-Ka'abi had emphasized, in a meeting with the head of Hamas's political bureau Isma'il Haniya and the secretary-general of the Palestinian Islamic Jihad (PIJ) Ziad Al-Nakhalah, his organization's willingness to cooperate with the Palestinian resistance factions on the political and military levels and declared that members of the Iraqi resistance are able to infiltrate Israeli territory.
Amid those claims of Iraqi Shi'ite militiamen joining ranks with Palestinian militants to fight Israel, a Telegram channel affiliated with the Hizbullah Brigades in Iraq shared photos showing fighters entering tunnels without giving a location or time.
On May 13, 2021, Fatimyoon Electronic Team, a Telegram channel affiliated with Iran-backed militias in Iraq, claimed that there are 360-kilometer tunnels built to facilitate transferring logistical support to the Palestinians.
 Telegram, Sabreen News, May 16, 2021.
 Telegram, Center Kaf, May 17, 2021.
 See MEMRI JTTM report On Telegram, Pro-Iran Media Outlets: Hizbullah Transferred Missiles Via 360-Kilometer Tunnels That Will Be Launched Tonight On Israeli Targets, May 13, 2021.