As long as the various European countries are dependent on US, or any other power, there's really nothing for them to say.

The US military to be reorganised into clans as according to the wishes of the Great Father.

Found it easiest to maintain that there's no reliable accounts and nobody, including those who knew him, can be trusted as sources. GW has a rule that he can't be PoV character so it's baked in, with Abnett noting it was the original idea with the Heresy itself. Jumbled myth.

Also superdickery.