Some 19 major Italian cities - including Rome, Milan and Naples - are already on red alert, and by Monday all but two will be.

Some 19 major Italian cities - including Rome, Milan and Naples - are already on red alert, and by Monday all but two will be.

The current strain has so far killed 1,587 people, and there is currently no approved vaccine or treatment.

The current strain has so far killed 1,587 people, and there is currently no approved vaccine or treatment.

The renowned mountaineer was known for scaling the world's 14 highest peaks in just over six months in 2019.

The attack comes as Moscow escalates deadly ballistic missile attacks on the Ukrainian capital.