And I found this section strange:
By now Hamas was dominant and its military wing was ordering repeated car bombings of Israeli civilians.
But there was a nasty and dark side to what Sheikh Yassin and his fellow Islamists were up to in Gaza in the 1980s. They got a reputation for violently attacking anything that supported the PLO - rather than the Israelis.
Apparently attacking Israeli civilians doesn't count as "nasty and dark"?