RTE guide 27

[underwater]

23D The problem is what we qre made of m?t???
29a Might some say adieu robustly to it ??p?
17D Northern location arranged for such government ?o?l?t?o

Thanks

[crofter]

23D MATTER
17D COALITION

[crofter]

29A could be EURO ~ if the "P" is wrong?

Note "adiEU RObustly"

[Jumbuck]

17d I asked this before without reply so here it is again:

why coalition ? that is an anagram of location + i - the clue suggests an anagram of n + location, and there is none that fits...