Ahmed Tibi (who also by the way, comes out against Holocaust deniers) is quite right. Netanyahu, Lieberman et al allow extreme fringe groups in the territories to run rampant. So sadly, this incident at Tuba, if conducted by Jewish terrorists, should not be surprising. The perpetrators should be caught, forced to rebuild the mosque, then put in jail for a very long time.
5 wounded Syrians rushed to northern Israeli hospital (Haaretz)
from the article: Netanyahu: Galilee mosque arson 'horrifying' and has no place in Israel