As someone who has researched apologies for governance mistakes (ex. Japan should apologize to East Asia some more), apologies are lovely but the term is requires clarification to have any meaning or purpose.

It seems to be a matter of ego. Do you want them to bow at your feet and beg for forgiveness?

What actions will be forgiven if they apologize?
Will their apologies ever be enough to please you?
Can you clearly define the type of apology expected?
Do you promise not to demand more apologies if they meet your expectations?

That said I don't think they need to apologize.