Coming soon: Abortion of newborns?

Two  ethicists working at Australian universities  are arguing that it is as acceptable to "terminate" a new-born child as it is  to abort a fetus, because newborns are not "persons".  Where will it stop?  Will  liberals eventually want the right to  decide  at any age who is not  a "person" and exterminate them?  Ridiculous? Not so much.  Hitler did it very successfully . Details and links here.