“We and our allies – including in the Middle East – are going to find you, we are going to destroy your bases, we will cut off your supplies, isolate you from your support – and for the sake of peace, democracy and the freedom of all those you terrorise, we are not going to stop until it’s done.
Mr Clegg said his party’s condolences went out to the families of British aid workers Alan Henning and David Haines, who were murdered by Isil, calling their killers “cowards”.
Referring to the Scottish referendum, he said the campaign had forced Britons “to hold up a mirror and think about who we are,” noting that “these Isles of ours are among the most diverse and inclusive in the world.
“You can be British as well as Scottish, English, Northern Irish, Welsh…ish. At the same time you can be black, white, Asian, Indian, African, European, mixed, not-mixed. You can be gay, straight, bi-sexual, transgender. Christian, Muslim, Jewish, Hindu, Sikh, atheist”.