Well on the downside, that could be enough to get them to start World War 3.
We haven’t seen Another World War because all of the major countries have too much to lose. Put one in a desperate position with little to lose and we’re all in jeopardy.
Norman Angell wrote a book, published in 1909, titled “The Great Illusion”, arguing that there would never again be another great war in Europe, because “the economic cost of war was so great that no one could possibly hope to gain by starting a war the consequences of which would be so disastrous.”