Arsenal boss Arsene Wenger admits they cannot be defensive going into tonight's Champions League clash at Roma.

He said: "I do not think that is the way to behave going into a game like this as it is too dangerous.

"The positive thing about our home result is that we did not concede a goal, and we did not score enough to think we just have to defend.

"They will go for it because they know they have to score at least two goals and put us under pressure.

"It is down to us to be well-organised and to come out and play our game."

Wenger also declared: "We can win anywhere in the world.

"It is always down to the quality of your performance, our desire, our determination - and not too much on how big the occasion is."