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• David Cameron has called for his referendum on Britain’s membership of the EU to take place on 23 June, after the cabinet formally agreed to campaign to stay in despite several minister openly supporting Brexit.

Speaking from outside Downing Street, the prime minister said he had secured a good deal with Brussels to give the UK a special status and leaving the EU would “threaten our economic and national security”.

• Michael Gove has said that the European Union is encouraging extremism across Europe as he joined five other cabinet ministers in breaking ranks with David Cameron to campaign to take Britain out of the EU.

The justice secretary, one of the prime minister’s closest political friends, posed for for a photo with his cabinet colleagues at the headquarters of the Vote Leave campaign group shortly after a rare Saturday cabinet meeting.

• A marathon round of talks over two days, during which the prime minister managed just three hours of sleep in the early hours of Friday morning, led to an agreement for the UK shortly after 9pm on Friday.

In a lengthy statement, which will form the basis of his main message in the referendum, the prime minister said that he had strengthened his key demands since the European council president, Donald Tusk, outlined his draft agreement on 2 February.

• Angela Merkel has said that the UK’s European Union deal had demanded “a lot of willingness for compromise”, but that such compromises were easier to justify if they meant Britain was more likely to stay in the EU.

The question of “ever-closer union” had proved a particularly sensitive subject, the German chancellor said, because it was “an emotional issue” although one she is in favour of.