piotru's Journal: Gossip from 1933

Marshal Józef Pisudski tries convincing France to execute together a preemptive war against Germany. France refuses. Fast-forward to 1939... (For uneducated, September 1st 1939 was the beginning of the Second World War, "WW2"). While already (legally at least) in war with Germany and being able to win on german soil, France remains passive again, until it is too late for France...
They also gave up on Enigma, what a grave underestimation of themselves...
Also look for Sir Robert Vansittart (of british Foreign Office) account of talks with Pilsudski.