In the twentieth century, Alexander Chizhevsky in Russia and Raymond Wheeler in America made studies of the history of war, analyzing all known battles over a 2500 year period. The index of wars was further examined by Edward Dewey of the Foundation for the Study of cycles, and it was found that 11 and 22 year cycles related to the Sunspot cycle were present throughout history.
Do we need to consider another influence on historical events? Some unseen cosmic forces may play a part in the tides of human affairs, and as we come towards the peak of solar cycle 24 is it just a coincidence that war and conflict is escalating?
See http://www.cyclesresearchinstitute.org/chizhevsky.html where the paper on War cycles is available.