Philippine President Rodrigo Duterte has said he regrets calling his US counterpart Barack Obama the "son of a whore". His controversial comments have led to diplomatic consequences with the US president cancelling a scheduled meeting with Mr Duterte. But the Philippine leader, who has insulted prominent figures before, is not the only one guilty of offending world leaders. From a "sadistic nurse"
![Obama, Duterte and other notorious political insults](https://cdn-ak-scissors.b.st-hatena.com/image/square/2eb85890c2541e53dcd324e872dea246e53042ec/height=288;version=1;width=512/https%3A%2F%2Fichef.bbci.co.uk%2Fnews%2F1024%2Fbranded_news%2FC480%2Fproduction%2F_91040305_gettyimages-2703047.jpg)