Who's at risk of damage from asteroids?

This new report seems to underline my point that it's in every nation's interest to set up a system for early detection and possible diversion of earthbound asteroids or comets:

China and the US are the countries most vulnerable to damage from future asteroid impacts, according to preliminary new research.
[...]
The team focused on smaller asteroids because they hit the Earth more frequently. An asteroid a few hundred metres across hits the planet about once every 10,000 years, on average, while those larger than 1 kilometre hit only every 100,000 years or so. Small asteroids are also harder to spot. "We're more likely to be hit by one without much warning," Bailey told New Scientist.

Using maps of population density, the researchers charted the places likely to suffer the most casualties. As might be expected, countries with large coastal populations turned out to be most vulnerable, with China, Indonesia, India, Japan and the US in the top five spots.
[...]
The US faced the worst potential losses, perhaps not surprisingly, since it has a lot of infrastructure on coastlines facing two different oceans. China was second, followed by Sweden, Canada, and Japan.
[...]
The researchers also produced maps showing the worst possible places on Earth for an impact to occur. The Pacific coast of Asia shows up as an especially bad place in terms of producing casualties. Impacts in the north Atlantic Ocean, which can send tsunamis to both Europe and North America, tend to produce particularly high infrastructure losses.

The biggest source of uncertainty for the results is the possibility that a single incoming asteroid might not make it to the ground intact, fragmenting in the atmosphere instead to produce multiple, smaller impacts – a scenario not considered in the model, Bailey says.

Can anyone tell me how this doesn't affect every country in the world?

And it's not just a matter of saving people's lives (not to mention whole species) but it's also an economic issue, as this report clearly shows. That should get the politicians' ears, shouldn't it?