Stating That Questions Are Mostly Technical
How to put it right? In this comment clause, we have to admit that the issues are technical, but we have to invite the international experts to resolve it:
'While these are mostly technical questions, we shall have to invite the international experts to resolve them'.
Solution 1:
You would say "Since" rather than "while".
"While" has almost the opposite meaning to what you want in this context: it implies that the experts aren't a good choice to answer the question but you're obliged to ask them anyway.