Ricky explains why senior ministers quitting means trouble for Boris Johnson

Two senior Conservative ministers - Rishi Sunak and Sajid Javid - have quit their jobs in protest over the latest scandal to rock the UK's prime minister, Boris Johnson.

And this move could spell trouble for the prime minister, who is now facing new calls to resign.

Ricky explains why these resignations are so important and what is in store for the prime minister now.