Add another event that is going to be held virtually to the list. Saudi Arabia currently holds the presidency of the G20 - an annual meeting of leaders from countries with the largest and fastest-growing economies, consisting of 19 nations plus the European Union.

Authorities in the country have announced that the planned November summit in the capital Riyadh would have to be held online due to the pandemic.

The kingdom's leaders hoped chairing the event would boost its international reputation. Saudi Arabia took the presidency of the G20 shortly after the murder of journalist Jamal Khashoggi in the Saudi consulate in Istanbul.

Leaders in Riyadh say he was killed by a team of agents in a "rogue operation”, but the UN has said there was credible evidence that high-level officials, including Saudi Crown Prince Mohammed bin Salman, were individually liable - an allegation the prince has denied.