This "rabbi" is a fool who is misrepresenting what is written by great and accepted authorities on Jewish law. "Rodef From Wikipedia, the free encyclopedia A rodef (Hebrew רודף, lit. "pursuer"; pl. רודפים, rodefim), in traditional Jewish law, is one who is "pursuing" another to murder him or her. According to Jewish law, such a person must be killed by any bystander after being warned to stop and refusing. ---The allowance to kill the rodef does not apply, however, in a case where lesser means would prevent the innocent's murder. Furthermore, according to the Rambam, killing a rodef who may have been stopped by lesser means constitutes murder, ---"
from the article: Who is funding the rabbi who endorses killing gentile babies?