Nahash the Ammonite attacked the people of Yavesh Gilad; without Shaul's intervention, the people of Yavesh Gilad would have had to surrender in shame. Why? Why didn't the nation come to their aid? Why does Shaul have to take drastic measures to gather the nation? What is the significance of the parallels between this story and the story of the concubine at Giv'ah?

Additional References
שופטים; יט; שופטים; כ;