What afterlife issue in Judaism? They get arrested in Israel or elsewhere, rejected by the Jewish community, & convert to Islam .... but not any old kind, the radical kind where they can feel right at home.
Then they rant about Jews killing innocent civilians, when it's they themselves who hole up under civilian homes & businesses of their beloved brothers & fire at their "declared enemies"... so civilians will get killed more easily & make a nice PR print to recruit more.
Then in their interpretation, they gain martyerdom & a guarenteed place in the world to come by having fought in defense of Islam, meaning having fought to make every land that was ever Islamic, Muslim again no matter who's hurt in the process. (This is the literal interpretation of jihad & the one they use.)
(I'm serious about the arrested. There are only a very tiny number of Israel supports in the world who have considered targeting randomly at civlians. Israel has outlawed both the behavior & any associated groups. And when a member walks onto Israeli soil they are immediately arrested, without having had to do any damage - just for considering it. Even less of these are in Israel, than elsewhere in the world.)
If a Catholic breaks the law, the cops won't hold off and leave him alone if he says "It's okay, fellas - I'm going to HELL for this! No need to interfere."
I've yet to see a true Jew answer this. Depends which Jew you ask though. I hear it does differ these days. There are Jews who believe in Angels, the messiah, etc and some who don't. I just grew up near them, never got into the fundamentals. Hell, Brooklyn's full of them.
Why is it so important what religion someone's victims belong to? Jews aren't so into killing civilians from another religion senselessly and delibrately---what was the official religion of Sudan, again?
There are various Jewish beliefs on the afterlife--many sages agree that the harshest supernatural punishment for a transgressing Jew that is not punished in this life is kares/karet--literally, spiritual excision of a Jewish soul from G-d. It is a nebulously defined concept that could mean several things, from a premature death to the destruction of the soul. Additionally, many Jewish conceptions of the afterlife include a passage through Geshona, a purgatory-like state, for no more than eleven months before the soul is purified enough to enter The World to Come.
Jews really don't spend a lot of time delibrating on what will happen to transgressors in the next life--we take it for granted that G-d is just and will appropriately punish them. We really don't have revenge fantasies about people we dislike in hell.
In Judaism there is a Hell. Hell was created for Satan and his angels that followed him. A Jewish people will receive their punishment from God if they do not repent from their sins and accept Christ into their life.