Iran became the second team to qualify for the 2018 World Cup after beating Uzbekistan 2-0 in Tehran on Monday.
Five-time winners Brazil had emerged the first team to seal their place, after the hosts Russia, at the global tournament when they secured a 3-0 win over Paraguay in March.
Iran have followed suit, as goals from Sardar Azmoun and Mehdi Taremi ensured the Asians will appear at successive World Cups for the first time.
Iran have won six games from eight matches in Group A and are currently atop the group with 20 points, while South Korea are second on 13 ahead of their match against Qatar on Tuesday.
The top two teams in each of Asia’s two qualifying groups progress to the World Cup, while the teams in third place go into a series of play-offs.
The World Cup in Russia will run from June 14 to July 15, 2018.
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