> European nations would not be able to afford universal healthcare and all the welfare if they had to pay for their security.
European nations that provide universal healthcare spend less (as a share of GDP and per capita) on healthcare than the US does. So, while they may get a "security subsidy" from the US, it doesn't make sense to say they wouldn't be able to afford universal healthcare without it, since the universal healthcare they have is less expensive, as a share of GDP, than the non-universal healthcare the US pays for while providing the security subsidy.
European nations that provide universal healthcare spend less (as a share of GDP and per capita) on healthcare than the US does. So, while they may get a "security subsidy" from the US, it doesn't make sense to say they wouldn't be able to afford universal healthcare without it, since the universal healthcare they have is less expensive, as a share of GDP, than the non-universal healthcare the US pays for while providing the security subsidy.