Her princes … - Jeremiah had before his mind the sad flight of Zedekiah and his men of war, and their capture within a few miles of Jerusalem Jeremiah 39:4-5.
Matthew Henry
Concise Bible Commentary
The prophet sometimes speaks in his own person; at other times Jerusalem, as a distressed female, is the speaker, or some of the Jews. The description shows the miseries of the Jewish nation. Jerusalem became a captive and a slave, by reason of the greatness of her sins; and had no rest from suffering. If we allow sin, our greatest adversary, to have dominion over us, justly will other enemies also be suffered to have dominion. The people endured the extremities of famine and distress. In this sad condition Jerusalem acknowledged her sin, and entreated the Lord to look upon her case. This is the only way to make ourselves easy under our burdens; for it is the just anger of the Lord for man's transgressions, that has filled the earth with sorrows, lamentations, sickness, and death.
SDA Bible Commentary (limited)
Volume 1-7
6. Without strength. Probably a reference to the way in which Zedekiah and his court were captured by the Babylonians (Jer. 39:4, 5).