You did not notice even bigger dikduk problems in the headline:
does “his wedding” refer to the terrorist or to the cow?
or maybe, the cow is the subject who shechts terrorists – and gets eaten “for his own wedding”:
terrorist-shechting Cow, for his wedding, is eliminated.
a halachic (sharia-wise) question would be – is the meat still mutar if the terrorist did not fully finish zabihing before being eliminated, or finished zabihing after being eliminating while falling on his knife.
furthermore, presuming the cow is OK, then can the bride get married same day to the terrorist’s brother not to waste the cow before aveilus starts? If yes, they need to act quickly (both marrying and eating) before IDF arrests them as accessories to terrorism and destroys the house.
I think this is addressed in Beitza 25 by R’ Akiva regarding eating from the live animal at the end of yontiff.