war changes, wars as they were fought in 1900-1945 are most likely not to be repeated because of nukes, so maybe proxy wars yes,
but even that behind the scenes most wars today are economic, currency wars, diplomatic ultimatums, pressure, energy wars, bribes,
using terrorism to your benefit, black ops, financing terrorist for your gain, biological warfare etc.
So, completely different interface would be needed for hearts of iron (21st century).. actually the name hearts of iron is not suitable,
since the wars become more clandestine, more "dirty", less out there and in the open, so maybe the title should be Minds of Steel,
and wars should be beyond pack of corporations fighting against other corporations by using "nations" to mask their intent and war
on information to hide this from general population and enemy try to expose this to sabotage you..