I watched Barcelona's performance in the champions league last season. Their main weakness was their defense.  Barcelona's defense was very poor against Champions l eague teas . And due to poor defense, the team had to concede a lot of goals.  And the overall condition of the team was also somewhat weak. But the team's condition has improved this season. The barcelona team is now strong enough . The performance of their defense and attacking players is stable now. barcelona's midfield has also been strengthened with the addition of gundagon to the squad. And this is why barcelona is a tough opponent for any team in this year's champions league. The team has the ability to challenge any team...