The ring of fire doesn't seem to include Haiti: http://arstechnica.com/civis/viewtopic.php?f=26&t=36428
The Caribbean instead has it's own smaller "ring": http://www.csmonitor.com/World/Americas/2010/0121/Haiti-eart...
The Caribbean instead has it's own smaller "ring": http://www.csmonitor.com/World/Americas/2010/0121/Haiti-eart...
Because both islands are divided between 2 states each.