ERRATUM : IT WAS ONLY AN UNDERSTANDING NOT A TREATY

In HOW THE WAR PARTY IN THE BRITISH CABINET ENGINEERED WORLD WAR ONE I brought your attention to some sort of agreement between France and Great Britain if Germany attacked French channel ports. This was not a treaty, only an understanding. This is crucial. If it was a treaty there was no way that Grey could have kept it secret, but he was not bound to report the understanding to the cabinet or the House of Commons.

But did King George V know?