Super Eagles wingback Ola Aina admitted that Angola were the toughest opponents Nigeria have faced in the ongoing Africa Cup of Nations, AFCON. He said the Palancas Negras proved a tough nut to crack for the Super Eagles on Friday evening. Nigeria beat Angola 1-0 at the Felix Houphouet-Boigny in Abidjan, thanks to Ademola Lookman’s game-winning strike in the late first half. The former Chelsea star reckons that it was one of the most difficult games played by the Super Eagles so far at the ongoing AFCON. “We knew it was going to be a difficult game; I think so far it’s one of the hardest we’ve…