When does anyone ever apologize like this?

ETA is the Basque separatist organization, which has been fighting for their independence in the Pyrennees region of Spain and France for many years.  They are well known for their terrorist attacks, which included blowing up a Spanish PM and a grocery in Barcelona.

Recently they have announced their disbandment.    As part of this process they have -- get this --
apologized to all the people they have harmed.

From the Guardian, today:

The Basque terrorist group Eta, which killed more than 800 people during its four-decade armed campaign, has apologised for the suffering it caused and asked for the forgiveness of victims and their families as it prepares to dissolve.
In a statement released on Friday morning, the group made a full and unambiguous apology for its actions, accepting that it bore “direct responsibility” for years of bloodshed and misery.
“We know that we caused a lot of pain during that long period of armed struggle, including damage that can never be put right,” it said. “We wish to show our respect for those who were killed or wounded by Eta and those who were affected by the conflict. We are truly sorry.”
The statement also recognised that Eta’s “mistakes or mistaken decisions” had led to the deaths of people who had nothing to do with the conflict, both in the Basque country and beyond.
“We know that, owing to the necessities of all kinds of armed struggle, our actions have hurt people who bore no responsibility whatsoever. We have also caused damage that can’t be undone.
“We apologise to those people and their families. These words won’t make up for what happened nor will they lessen the pain, but we speak to them respectfully and without wanting to provoke further suffering.”

I am not going to argue with anyone who has a cynical view of this declaration.  But who ever says "WE WERE WRONG?" in such a case?

Maybe this might be a step towards NOT "MISTAKENLY KILLING LARGE GROUPS OF INNOCENTS IN THE FIRST PLACE?"