I believe that the US Establishment is capable of anything. Anything which could threaten their little gun-running project in the ME will come under fire.
They could even have murdered Princess Diana, as she was campaigning against land-mines, cluster bombs and all sorts of gubbins.
Perhaps what you want to do is build up right-wing constituency-based groupings, which will organise to vote tactically to remove Kadima and Labour out, according to the local threat.
If you are dealing with phoney right-wing sellouts, then that is a difficult matter but be polite, charming, even flattering towards them (perhaps you should employ a British PR company to do this, only joking :p ) so that their activists can respect you, but, when a scandal erupts, slate and slander their leadership like there is, quite literally, NO TOMORROW, and welcome their activists to join you.