Unresolved dispute among the people of Israel

2 Samuel 19:31-43
Barzilai won't go cross over the Jordan with the king for he is 80 years old.
When the king crossed over to Gilgal, all the troops of Judah and half the troops of Israel had taken the king over.
Soon all the men of Israel were coming to the king and saying to him, "Why did our brothers, the men of Judah, steal the king away and bring him and his household across the Jordan, together with all his men?
But the men of Judah responded even more harshly than the men of Israel.
Why?
The dispute between the men of Judah and the ten tribes begins a rift which widens in Chapter 20 and will split the kingdom after Solomon's death.
It was David asked Judah come to invite him return to Jerusalem, and Israel had sent message to invite king return to Jerusalem.
Barzilai knew if he cross over Jordan with king is a burden to him and to the king, so he chose live in his own life.
Unresolved dispute may cause more troubles in the near future.
How?
Wise king cares his own relatives and his people and solve the dispute among his people.