Red - Iraq and Afghanistan universal health coverage provided by US war funding
Grey - Countries with no universal health coverage
Dark Green - Countries with some kind of universal health coverage
Light Green -Countries attempting universal health coverage
"Keep in mind: this is a simple list of countries that have some sort of publicly sponsored health care system. For instance, Sri Lanka may be far from having a true, working universal health care system like France, but prescription drugs are provided by a government-owned drug manufacturer. This qualifies as "some sort of publicly sponsored, universal health care system."
Universal healthcare is simply health care coverage for all eligible residents of a political region where costs are borne in the majority by government-funded programs. I am not sure why Singapore is not coloured dark green though.