Oldie Genius 254

[jeraldo]

Stuck on the following:
18d Is news, if found, inaccurately spread (9) D?F?U???N
32a Completely ignoring question about new ally (5) U????
23d Sends removers of impurities (6) ?E???S - this one is a definition of two words, one longer than the other including the letters IN which are removed to make the shorter word!
... and if any can confirm 30a - One found, without a problem, northern dramatist (5) is it IBSEN? Why? I have I?S?N.
Many thanks in advance!!

[mac44]

18d diffusion, anag of is if found
30a, i bse n

[jeraldo]

Thanks Mac44 so far! That means 32a is now U?I??

[slaney]

32a Completely ignoring question = (Q)uite
around n(ew)
Unite - ally

[jeraldo]

Thanks! That means then that 23 becomes ?E?E?S with the rider that IN is taken away from some part of the first word to form the second word ... any thoughts?

[slaney]

Refers/Refiners?

[jeraldo]

I think you've got it Slaney! Many thanks!