Can two siamese twins be separated by killing one if that one would die anyway and the other would live
In two Simaese twins where the first will definitely die soon, whereas the second has a chance of life if the first stops being a 'drain' him. Like if there is only one heart. Can one kill the first ...
2 Sam. 20:10: וַעֲמָשָׂא לֹא נִשְׁמַר בַּחֶרֶב אֲשֶׁר בְּיַד יוֹאָב וַיַּכֵּהוּ בָהּ אֶל הַחֹמֶשׁ וַיִּשְׁפֹּךְ מֵעָיו אַרְצָה וְלֹא שָׁנָה לוֹ וַיָּמֹת M'tzudos says this means he stabbed him ...
Is the morning-after pill considered an abortion in Halachic terms or does it have another status, and, if the latter, may it be used?