A Jerusalem court has handed a life sentence to the main attacker in the killing of a Palestinian teenager in 2014 whose death helped spark a chain of events that led to that year’s Gaza war.

Former Israeli prime minister Ehud Olmert has been convicted of unlawfully accepting money from a US supporter in a retrial on corruption charges, the latest chapter in the downfall of a man who, only years earlier, hoped to lead the country to a historic peace agreement with the Palestinians.

An Israeli who stabbed his mother and father to death was convicted of murder partly because he searched online for tips including “how to kill your parents and get away with it”.