Final answer:
The Philistines threatened Israel's territory and security due to Israel's disunity.
Step-by-step explanation:
The Philistines took advantage of Israel's disunity and threatened Israel's territory and security.
The biblical book of Judges describes how the Hebrews faced oppression from the Philistines and organized themselves into a kingdom called Israel to defend themselves. Under the leadership of their kings, the Hebrews were able to push back and eventually defeat the Philistines completely.
In modern history, conflicts between Israel and its Arab neighbors, such as the war in 1948 and the Six-Day War in 1967, resulted in threats to Israel's territory and security as well.