What you have here is "normal business", we find this in nearly all old weapons deals and even advanced weapons deals
For instance, Algeria had required that no Isreali equipment were fitted on their helicopters, they discovered that one of their furnisher installed Israeli equipments.
Aside from the ideological, political aspects, it was a violation of the contract and they went to court.
That the croatians want to go to court is one thing and is totally justified , but you can read that RT is saying much more than the croatian sources.
To go back to my first post in the thread, some of it is reliable, but the whole RT text remains to be prooved.
And as I said, if they want to go to court, it would be completly stupid from the croatian to destroy the prooves => that's what make the RT text doubtfull
It is a typical porpaganda technic to amplify and exacgerate an affair from the other side, because Russia did and is still doing a lot of similar things in their weapons deals.
I suggest you read the acig forum to see how much this practice are generalized ...