What does 1 Samuel 11:1 mean?

About a month later, Nahash the Ammonite came and surrounded Jabesh-gilead. The people there said, 'Make a treaty with us, and we'll serve you.' 1 Samuel 11:1 - Modern Text Bible

(A foreign enemy, Nahash, threatens an Israelite town. The people are desperate and willing to surrender if it means survival.)