Whakakihia te rerenga e whai ake nei: I te marama o Tihema 2011, i whiriwhiria a Barkov ki te takaro mo Finland hei kaitakaro taitamariki Finnish i te Ice Hockey World Junior Championships. I te whakataetae hauwhā-mutunga i te 2 o Hanuere 2012 ki a Slovakia, ko Barkov te kaitakaro tuarua i eke ki te whaainga i te ao Juniors i te 16 tau me te 4 marama. Ko te rekoata kei a Viktor Alexandrov o Kazakhstan, nana nei i whakatakoto te rekoata i roto i
2001 i te 15 o oku tau.