Highlights AC Milan 0-2 Arsenal March 8 2018
Milan tried to up the tempo after the break, wasting a clear early chance to pull one back when Giacomo Bonaventura spooned over the bar.
But Arsenal were largely unruffled from then on, limiting the home side to half chances with a solid defensive effort.
The two away goals now make the Gunners firm favourites to reach the quarter-finals after next Thursday’s second leg at Emirates Stadium.
Wenger spoke before the game about his team showing fight without compromising their attacking principles – and they delivered in a dominant first-half performance.
“Overall it is important to win, but it is not qualification. We have to finish the job at home. I am happy with the spirit and response we gave,” said Wenger.
“We were not in a position to take risks, but we could not be too cautious as you lose fluidity. We defended with resilience until the end.”