In my native language, when an additional information needed in support of the subject we talk about, we do it in the following way
In the absence of Marty, Alberto will stand in for him. I should open brackets for Alberto. He has worked in the similar industry for 30 years and he ....
The UK and Ireland pledged to protect the deep ties of family and friendship. I'll open brackets for Ireland. They left the UK after 1921
We use "open brackets" term to say that "Get ready people, now I'll give a little bit of information about the person/thing."
Is there a native/natural way of doing that in English? Because I know that "open brackets" is not used in English in the way I used