I’m sorry, but another World War is coming. mainly due to the uselessness of nuclear warfare and Globalization.
First off, nuclear warfare only works to end a war. Its not the useful first strike. The obvious thing is to knock out the nuclear weapons of the defenders and his allies with a preemptive strike, mainly of low-flying or even strategic bombers. To defeat farther inland missile silos/airbases, you uses a fast moving bunker busting missile, like the Tomahawk missile, to destroy them. SSBN submarines are only moderately effective due to them having to close the distance.
Second, Globalization, while it is a neat idea of preventing a massive war by withdrawing on the economic support of a nation, only works if the nation doesn’t decided to goes balls to the wall and goes full out on its enemy. For instance, if Russia decided it was ripe for a 3rd world War, who the heck is going to stop their economy? They are self-sustaining themselves.
And for the finale, the only reason there hasn’t been a 3rd world war is that fuel cost are so high. Once the World finds another massive oil well, like the Arctic oil fields, the Alaskan oil fields, and the Siberian oil fields, the cost of fuel will lower and more fuel will be ready to fuel the World’s massive war machines.