Yep cancel their passports.

The same should apply to any who return to the country they claim to have fled in fear of their life. Those who go back for a holiday, to find a compliant wife, or to retire on our welfare, should also have their citizenship cancelled, & all rights to welfare, or to return to Oz, removed

At the risk of trying to appear sane, what crime are these people committing?

If a war were to break out here (as so many lovely folk on this Forum predict) between Christians and Muslims, would you expect there to be sanctions against Australian/UK dual citizens coming back here to defend their families?

If their actions are within the law, what is the problem?

Right with you there, Pericles.

No one ever bothered to stop Australians going to fight the British in Occupied Ireland nor did anyone bother about Australian soldiers being detached to British units in Northern Ireland for a bit of active experience; if an Australian citizen wants to go and fight in a war somewhere then that should be their own business.

Few, least of all the then Government, did anything to stop Ustashe in Australia from raising money and training in Australia; and plotting the overthrow of Tito's Yugoslavian Government

What to do about Aus citizens going to fight in syria?
Banjo,
Give them everything they need so they won't need to come back after they anihilated most of each other. I really would be cheaper & keep the problem over there. It is not possible to reason with these people.

>>What should we do about this?<<

Let them. People who are keen to run off to be shot, maimed and killed are examples of Darwinism in action. We should be thankful for such idiots eliminating themselves from the gene pool and give them our full support when they follow pursuits that make their deaths more probable. The more people carrying war-mongering genes we can have killed before they reproduce the better: it means that there'll be fewer war-mongers in subsequent generations which leads to less war.

Cheers,

Tony

In Australia, we have rules and laws that all our permanent citizens have to follow, regardless of where they may have been born.

It is not illegal for someone to take a trip back home to the old country, so we can't 'do' anything about that.

However, if they commit serious crimes (like war crimes/murder etc) while overseas, then they should have their citizenship revoked and not be allowed to return.

I would say the same of an ex Irishman going back to fight the IRA in Belfast, as I would any ex-Syrian going back to Syria to fight.