World War One? That's a ridiculous comparison.
First of all, the country which plotted the assassination was the same one that declared war, which would be an absolutely !@#$ing absurd in any real international political situation. It's just nonsense.
Second, it was a larger country which conspired to assassinate the sovereign ruler of a smaller country, not the other way around. The list of demands the Austrians gave to the Serbs was strict, but it was not designed to incite war; rather, the intention was to make Serbia a puppet state so they could control the Black Sea shipping routes, hence why Russia became involved. Germany took out France so it could focus on the Russian flank unperturbed, England joined because of France, and America joined because it was profitable.
However right or wrong some of the reasons for the first World War seemed, they all came from logic. This war in the Far East was only started because everyone was bored with peace.