Personally, I think its a fair deal. Previously, Europe charged US 39% on US exports and US charged Europe exports only 20%. New Europe tariffs will drop to 15% in exchange for Europe investment in the US.
Most important in all this is the defense pacts strengthened. NATO's common bond is intact again and because NioCorp will produce so many of the minerals that go in to defense, it may be logical to see NioCorp receiving money from Europe to finance the project. Time will tell.