Inter Milan boss Simeone Inzaghi described his side's 2-0 win over neighbours AC Milan as "hugely positive" but that his players still had "one more step to go" to reach the Champions League final.
Inter blitzed their city rivals with two goals in the first 11 minutes through Edin Dzeko and Henrikh Mkhitaryan and could easily have put the tie to bed during a dominant first-half display.
Milan improved after the break but will be grateful to still be in reach of the 2010 champions after a disappointing performance in front of their supporters in the ‘home’ leg of the tie.
Inter need to avoid a collapse in the second leg of their all-Italian tie in order to reach a clash with either Real Madrid or Manchester City in Istanbul on June 10. "We played a brilliant first half, but it's a tight scoreline for what we did out there," Inzaghi told reporters. "Then in the second half we managed the game well.