The Tokyo 2020 Olympics have become the first Games in modern history to be postponed for anything other than a world war.

Here, the PA news agency takes a look at what the decision will mean for the city, the athletes, and the enormous financial and logistical implications on the sporting calendar.

Didn't the IOC say it would delay any decision?

It will cause chaos. Assuming the rearranged Games take place in July/August, they will clash – among many others – with the 2021 World Athletics Championships, scheduled for Eugene in the United States, and the World Swimming Championships, set for Fukuoka. The subsequent knock-on effect could be so prolonged it could affect the status of the 2022 Commonwealth Games – at least in terms of participation – and even beg the question of whether the next Olympics, in Paris in 2024, should be pushed back a year too.