DUMA, West Bank — Suspected Jewish assailants set fire to a West Bank home on Friday and burned a sleeping Palestinian toddler to death in an attack that drew Palestinian rage and widespread Israeli condemnation. The attack, which threatens to set off another violent escalation, shines a light on the growing lawlessness of extremist Jewish settlers that Israel is either unable or unwilling to contain. The extremists have for years staged attacks against Palestinian property, as well as mosques, churches, dovish Israeli groups and even Israeli military bases.