They landed at 2.15am by a Qatar Airways flight before being escorted to the team hotel by a tight security cover, a local team official said.
Making a comeback after their only appearance in the UAE-2013, the Asian champions will face Mexico in their group F World Cup opener at Saltlake Stadium on October 8.
It will be a test of character for the war-ravaged country, who are placed in a group of death featuring heavyweights Mexico, Chile and England.
Iraq emerged victorious from the 2016 AFC U-16 Championship, defeating Iran in the final to become Asian champions for the first time and qualify for the tournament under the guidance of their coach Qahtan.
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All eyes will be on 16-year-old Mohammed Dawood who led the turnaround for their historic feat in 2016 after they had failed to find the net in the first two matches.
Iraq squad:
Goalkeepers: Ali Ibadi (Air Force Athletic Club), Mustafa Zuhair (Naft Al-Wasat SC), Abdulazeez Ammar (Al Shorta SC).
Defenders: Ali Raad, Muntadher Abdulsada (Al Hidood); Abdulabbas Ayad, Ammar Mohammed (Al Talaba SC); Maytham Jabbar (Al Shola), Muntadher Mohammed (Al Kahraba), Mohammed Al-Baqer (Al Sina'a FC).
Midfielders: Habeeb Mohammed, Saif Khalid, Mohammed Ridha (Al Talaba SC); Abbas Ali (Al Hussein SC), Bassam Shakir (Al Karkh SC), Mohammed Ali (Al Nagda), Moamel Karim (Al Shorta SC), Ahmed Sartip (Gas Al Shemal).
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