Even today in Israel, it is necessary to have a writ of divorce for divorce to be complete. However, many are still put away and not divorced. The problem is still there.
"While in most cases Judaism's tolerant acceptance of divorce enables a decent split, in too many situations this male prerogative becomes the means for extortion, vengeance and affliction--certainly not a biblical ideal. Thus, although her consent to the divorce is necessary, the woman is still at the mercy of the man. (This shows that women cannot divorce the men in Israel) In the course of the development of Jewish law, many improvements have been incorporated into the system in an attempt to limit the man's unilateral power and prevent the misery. The rabbis were aware of and sensitive to women's vulnerability. But....A Jewish divorce requires a get, a document that a man freely gives to his wife and she must voluntarily accept. Without this document neither partner may remarry according to Jewish law. Today, this affects Conservative, Orthodox and all Israeli Jews. The Reform movement often relies on local civil divorce courts and the Conservative movement has empowered its central court to intervene and act unilaterally to effect a divorce when there are insurmountable problems.
But throughout Israel and in the Orthodox community outside of Israel, the pattern of insisting on the biblical directive has left too many women agunot. An agunah is a woman who cannot remarry because her husband is unable or unwilling to give her a get. The term literally means "anchored" or "tied down" and if first founnd in verb form in the biblical story of Ruth(1:13). The original talmudic use of the word was limited to cases in which the man had disappeared and literally could not act as a legal instrument in the Jewish divorce proceedings. Recently, popular usage has expanded the term to apply to all cases of women who are
unable to remarry because their husbands will not acquiesce and give the divorce document."