treason

The call came after Machar - currently under house arrest - was charged with murder, treason and crimes against humanity.

Similarly, in October 1779, two suspected Tory spies captured in the Hudson Highlands were shot on the spot, their execution justified as punishment for treason.

The ex-Confederate Jefferson Davis managed to avoid trial for treason; a sympathetic prosecution deliberately sabotaged its own case.

The Indonesian leader - who has already had to cancel a trip to China over the unrest - said some demonstrations had gone beyond what was considered peaceful and may amount to "treason and terrorism".

"But if Zelensky were to concede this land it would be not only a breakdown of our constitution, it could have the hallmarks of treason."