We recall the 1914 war. Germany and Austria invaded Russia. Russia agreed to tolerate Serbia's humiliation becoming more or less a protectorate after its high level involvement in the out rage at Sarajavo.
France got a very bloody nose when it tried to take Alsarce and Lorraine back by force.
You will recall how Germany stated that it had no quarrel with France.
There were elements in Britain that wanted to declare war on Germany.
However the Entente was not an alliance. And few wanted to take the side of the terror supporting state of Serbia.
What might have happened had events followed a different course?
France got a very bloody nose when it tried to take Alsarce and Lorraine back by force.
You will recall how Germany stated that it had no quarrel with France.
There were elements in Britain that wanted to declare war on Germany.
However the Entente was not an alliance. And few wanted to take the side of the terror supporting state of Serbia.
What might have happened had events followed a different course?