Personally, I would think that is probably a good idea...
Let them go and dont let them back in if they live...
However there are probably some legalities and appearance of international social responsibility that would make it a better alternative not to have kidnapped Australians kidnapped in the islamic terrorist lands, tortured and beheaded on live media by Australian grown and raised islamic terrorists speaking with broad, bogan accents, and of course parroting the well-known leftist political lines we see every day from the leftist media trolls and astroturfers...
Probably something along the lines that if Malcom Turnbull immediately replaces Tony Abbott as PM the victim will be spared the terrible painful head-lopping death the terrorist is planning to inflict...
