The Israelis are well advised to not trust the Europeans. Never.
And I think they know this.
These exercises - are peacetime games with no real political costs. And europeans tell Israel all the time how much they want to be friend with it. But politically they act differently. The boycott Israeli products. The lecture it on its v ital and most elemental security interests. They tell it it shoukld follow their own follies regarding Islam. But the real expert on these issues are not the Europeans, but the Israelis themselves.
Germany maybe would be more hesitent to
openly betray them. But in the end, when the situation becomes such and such, it would. Just a bit later than France or Britain.
And do not underestmate the double nature of German attitude toweards Israel. As a famous Jewish psychoanalyst once put it:
The Germans will never forgive the Jews the holocaust. That is no misquote by me, he said it like this. Think about it, and let it sink deep.
Its like with having friends for party. As long as you throw the party, they all want to be your friends and smile and laugh. But when you fall and become ill and need help or violate public consensus - then you soon see the false friends separating from the real ones. And of the latter, not many will remain. Telling you by experience.