What does 2 Kings 25:1 mean?

In the ninth year of Zedekiah's rule, on the tenth day of the tenth month, Nebuchadnezzar, the king of Babylon, brought his whole army to Jerusalem. They set up camp around the city and built siege walls all the way around it. 2 Kings 25:1 - Modern Text Bible

(Nebuchadnezzar attacked Jerusalem with his army, surrounding the city and cutting it off, starting a long and desperate siege.)