They keep flip flopping about their view on divorce. Some articles allow for divorce on the same grounds as separation but only allow remarriage on the grounds of fornication. The lateast Awake article only allows divorce on the grounds of fornication.
1st November, 1988 Watchtower
DIVORCE AND SEPARATION
... Sexual infidelity by a mate is the only ground for a divorce that will allow the innocent mate to remarry.
In addition, the Bible’s words at 1 Corinthians 7:10-16, while encouraging marriage mates to stay together, allow for separation. Some, after trying very hard to preserve their marriage, feel they have no choice but to separate. What can be acceptable Scriptural grounds for such a step?
One is willful nonsupport. When getting married, a husband assumes the responsibility of providing for his wife and children. The man who willfully fails to provide the material necessities of life “has disowned the faith and is worse than a person without faith.” (1 Timothy 5:8) So separation is possible.
Another is extreme physical abuse. So then, if a mate physically abuses his wife, the victim may separate. (Galatians 5:19-21; Titus 1:7) “Anyone loving violence [God’s] soul certainly hates.”—Psalm 11:5.
Another ground for separation is the absolute endangerment of a believer’s spirituality—one’s relationship with God. When a mate’s opposition, perhaps including physical restraint, has made it impossible to pursue true worship and has imperiled the believer’s spirituality, then some believers have found it necessary to separate.*—Matthew 22:37; Acts 5:27-32.
However, if divorce is pursued under such circumstances, one would not be free to enter a new marriage. According to the Bible, the only legitimate ground for divorce that permits remarriage is adultery or “fornication.”—Matthew 5:32.