“We must reinforce our sensitivity to the Divine definition of life by reviewing the halachos [Torah laws) that govern preservation of life and prohibit taking of lives. Specifically, as the Rambam declares; abortion is a type of murder and can never be permitted except when the fetus presents a danger to the mother’s life. The proposed law in Israel is not only legalized bloodshed. More than that, it is also a terrible desecration of G-d's name."
(Excerpt from remarks by Rabbi Moshe Feinstein, "Abortion in Israel,"The Jewish Observer, Sivan, 5736 / May 1976, Volume XI, Number 7, p. 10.)