II Kings 25:2 Midrash

וַתָּבֹ֥א הָעִ֖יר בַּמָּצ֑וֹר עַ֚ד עַשְׁתֵּ֣י עֶשְׂרֵ֣ה שָׁנָ֔ה לַמֶּ֖לֶךְ צִדְקִיָּֽהוּ׃

So the city was besieged unto the eleventh year of king Zedekiah.

Read midrashic interpretation of II Kings 25:2: and classical rabbinic exegesis.