Found an interesting book…
The United States and Britain in Prophecy.
In skimming parts of the book, says one third of Scripture is related to prophecy. Says the missing vital key is simply the identity of these great world powers: US, Britain, Germany, Western Europe, and Russia.
Not sure where China is here?
Duh, thinkun, and yes, with headache.
Keys - Great World Powers
Keystone - USA - If we fall, everyone falls.