The Washington PostDemocracy Dies in Darkness

Every new British prime minister pens a handwritten ‘letter of last resort’ outlining nuclear retaliation

July 13, 2016 at 10:27 a.m. EDT
The HMS Vengeance is shown returning to Naval Base Clyde. The Vengeance carries the Trident ballistic missile, Britain's nuclear deterrent. (Tam McDonald/Royal Navy)

After a tumultuous few weeks in British politics, Theresa May officially became Britain's prime minister on Wednesday.

The day was full of tradition and pomp. Her predecessor, David Cameron, traveled to Buckingham Palace to formally tender his resignation to Queen Elizabeth II and announce May as his successor. The queen then met May at the palace, asked her if she can form a government and then formally asked her to do so. May became the 13th prime minister to air-kiss the hand of the queen, who is 90 years old.