Rte Guide

[stuckonone]

12a Avant-garde could describe any country's creativity apparently ????? ?? THE ???
18a Is this how every courtroom testimony is regarded,in truth ?? ? ?????? ?? F???
22aShot on the howling prairies or in Death Valley, perhaps ?O??? ?????
29a To put it briefly it's a WMD N???

Thank you all in advance

[1ozzy]

29a Nuke

[aelmpvw]

29a nuke

[dannyk13]

12a.State of the art

[aelmpvw]

18a as a matter of fact

[elliemay1]

29 nuke??

[dannyk13]

18a.Is a matter of fact

[dannyk13]

^as^

[elliemay1]

22 seen as horse opera

[aelmpvw]

can't see a parse for horse opera?

[elliemay1]

A horse opera is another name for a Western film

[aelmpvw]

couldn't see the relevance of Death Valley, seems superfluous to the clue to me

[elliemay1]

found this :
//. By far the majority of films shot in Death Valley have been Westerns.//

[aelmpvw]

thanks ellie, still don't think much of the clue :-)