Is treachery an unPC invalid word?

Yes it is very un PC.

Apparently excuses for treachery must be made.

Obama believes it is because the jihadist homocidal maniacs aren't given plum jobs.

In Britain it is because they are not given top jobs with minimal qualifications too.

Apparently whenever jihadists do not get their own way it is our fault.

Biting the hand that feeds is commonplace among Nu BRITISH - race riots gave blighted our country for decades. Strange none of these people leave Britain for their former countries but prefer to riot or engage in criminality and terrorism instead.

You would not only be a traitor to Britain but a traitor to intelligence, morality, and to the many many Muslims that ISIS has murdered.

Maybe killing Muslims doesn't bother you since you could be like those two idiots from Britain who tried to join ISIS and bought an "Islam For Dummies" book at the airport, since they knew so little about it. Ha!! : D

"Traitors betray the trust of those who have faith in them or believe their promises. Traitor also applies to a person who betrays his country by committing treason: turning against his own government, perhaps by selling secret information."

You would be a traitor if your country was at war with those who you seek to aid, and a common mercenary otherwise. Religion doesn't make it right either.

Perfectly valid word and context. You'd be a mercenary and potentially breaking the law:

Foreign Enlistment Act in 1819

If you were to give help to any one or country who is an enemy of the Sovereign,then yes its treason. I dont think you would be otherwise.