Ok I finally found something on this:
*** w90 11/1 pp. 20-21 The Role of the Superior Authorities ***
"It Is God’s Minister"
Speaking of the secular authority, Paul continues: "It is God’s minister to you for your good. But if you are doing what is bad, be in fear: for it is not without purpose that it bears the sword; for it is God’s minister, an avenger to express wrath upon the one practicing what is bad."—Romans 13:4.
National authorities have sometimes served as God’s minister in specific ways. Cyrus did so when he summoned the Jews to return from Babylon and rebuild God’s house. (Ezra 1:1-4; Isaiah 44:28) Artaxerxes was God’s minister when he sent Ezra with a contribution for the rebuilding of that house and later when he commissioned Nehemiah to rebuild the walls of Jerusalem. (Ezra 7:11-26; 8:25-30; Nehemiah 2:1-8) The Roman superior authority served thus when it delivered Paul from the mob in Jerusalem, protected him during shipwreck, and arranged for him to have his own house in Rome.—Acts 21:31, 32; 28:7-10, 30, 31.
Similarly, secular authorities have served as God’s minister in modern times. In 1959, for example, the Supreme Court of Canada ruled that one of Jehovah’s Witnesses accused in Quebec of publishing seditious and defamatory libel was not guilty—thus counteracting the prejudice of the then premier of Quebec, Maurice Duplessis.
Further, in a general way, national governments serve as God’s minister by preserving public order until God’s Kingdom takes over that responsibility. According to Paul, to this end the authority "bears the sword," symbolizing its right to inflict punishment. Usually, this involves imprisonment or fines. In some lands it may also include the death penalty. On the other hand, many nations have chosen not to have the death penalty, and that also is their right.
The fact that the superior authorities are God’s minister explains why Daniel, the three Hebrews, Nehemiah, and Mordecai were able to accept responsible positions in the Babylonian and Persian governments. They could thus appeal to the authority of the State for the good of God’s people. (Nehemiah 1:11; Esther 10:3; Daniel 2:48, 49; 6:1, 2) Today some Christians also work in government service. But since they are separate from the world, they do not join political parties, seek political office, or accept policy-making positions in political organizations.
I find the above passage inconsistent on many levels. I don't have time right now to get into it!