Negotiations between the British and Irish negotiating teams produced the Anglo-Irish Treaty, concluded on 6 December 1921. The Irish team was led by Michael Collins, who had organised the IRA intelligence during the War of Independence. The British team led by David Lloyd George and Winston Churchill were prepared to make concessions on Irish independence but would not concede a republic. Towards the end of negotiations, Lloyd George threatened, "immediate and terrible war" if the Irish did not accept the terms offered.