• Stalin Volume 1 Paradox of Power 1878-1928

• Stalin Volume 2 Waiting for Hitler 1928-1941

The cover it from the Russian side in quite a bit of detail and contain some original research on the pact and its practice

• The Deluge: The Great War, America and the Remaking of the Global Order - Adam Tooze

• The Wages of Destruction: The making and breaking of the Nazi Economy - Adam Tooze

• Paris 1919: Six minth that changed the World - Margaret MacMillan

• The Great Interwar Crisis and the collapse of Globalization - Robert Boyce

These are some that I found interesting. Specially about Russia/Stalin.

I dont know great books about France or Britain during this time.