US started to eavesdrop on Turkey and Greece first. Germany pulled out of the project by citing this is going too far for them. Some citations from news:
The Germans were taken aback by the Americans’ willingness to spy on all but their closest allies, with targets including NATO members Spain, Greece, Turkey and Italy [0].
Operation Rubicon [1] has a map of spied countries, incl. NATO allies and "friends".
I failed to find that great long-read article. If I can find, I will attach it here, too.
