It was the third year that Jehoiakim was king of Judah. Nebuchadnezzar came to Jerusalem. His armies surrounded the city and attacked it. Nebuchadnezzar was king of Babylonia.
References for Daniel 1:1
The LORD handed Jehoiakim, the king of Judah, over to him. Nebuchadnezzar also took some of the articles from God's temple. He carried them off to the temple of his god in Babylonia. He put them among the treasures of his god.