Definition: In this task, a passage will be given and the goal is to identify an event from the passage. An event is defined as a single word representing something that happened, is happening, or may happen. An event can be factual or hypothetical, positive or negative, certain or uncertain. While most events are based on verbs, an event can also be based on a noun (ex. storm, snow, rainfall) or a copula verb (is, was, been, etc.). The event must not be a pronoun or an adjective. For noun events with multiple words, use the last word in the phrase as event.
Input: Passage: As the death toll in Lebanon has mounted, the Israeli government has been faced with a growing grassroots movement calling for Israel's unilateral withdrawal from Lebanon. Since 1985 _ when the Israelis created a security buffer zone southern Lebanon _ nearly 200 Israeli soldiers have been killed fighting Hezbollah and other guerrillas.

fighting