Four Palestinians have been killed after attacking Israeli soldiers in three separate incidents in the occupied West Bank. Two of the attacks were stabbings, while the third saw troops hit by a car. In all, four Israelis were hurt. It is the latest in a wave of attacks, mainly stabbings, by Palestinians on Israelis since the start of October. Nineteen Israelis and more than 100 Palestinians, mostly attackers, have been killed amid spiralling unrest.