
1) Cold war 2) Dangerous seat 3) Explosion waiting to happen 4) Fictional mercenary 5) Precarious matter
Found on
https://www.crosswordclues.com/clue/powderkeg

==Fictional character biography== Little is known about the man who became Powderkeg. He was a mercenary hired to steal high-tech circuitry for Brazilian crime lord Kristina Ramos. He ran afoul of Captain Marvel II (Monica Rambeau) who had thought she lost her powers after stopping a mutated Marrina. She encounters Powderkeg and used her new power...
Found on
http://en.wikipedia.org/wiki/Powderkeg
No exact match found.