France and Spain have already committed their 3.5 bn euro each and Germany isn't going to say no. It looks to me that the CDU were forced to split their approvals for phase 1B and phase 2 in order to get necessary SPD backing. Phase 1B is committed; phase 2 will require another vote in the Bundestag in a couple of years
https://sldinfo.com/2021/06/the-bund...light-on-fcas/ . (Maybe the 3.5 bn euro each is actually only for phase 1B.)
FCAS seems a lot further along than Tempest.