In a murder case, the court must establish both factual causation (but-for test) and legal causation (objective foreseeability). Actual intention to kill can be established where: (a) the accused desired to bring about death and succeeded, or (b) while pursuing another objective, the accused foresees death as a substantially certain result and proceeds regardless. Actual intention can be inferred from objective circumstances including: the nature and severity of the wound inflicted, the use of a dangerous weapon, the targeting of vital body parts, the degree of force used, and the accused's conduct after the act (such as fleeing the scene). Where two credible witnesses give consistent evidence about events that occurred in good visibility, and the accused's version is implausible and contradictory, the court is entitled to reject the accused's version and accept the state's evidence. Provocation by a relatively minor assault (being hit with a plastic chair) does not negate intention to kill where the accused responds with disproportionate and lethal force using a dangerous weapon.