Just read this as a webpage on my Blackberry (downloaded from Project Gutenberg) Second Variety at Project Gutenberg
Basically its kind of a cold war scenario story but set in the future with once again the Russians depicted as the bad guys (yawn)
The story itself is actually quite good and was published in May 1953, an early piece of PKD before he discovered drugs and messed his stories up.
Basically its one of Dick's many stories in which nuclear war has left the Earth's surface as an uninhabitable, gray ash pile, and the only things remaining are killer robots called 'Claws'.
The header of the story reads: The claws were bad enough in the first place—nasty, crawling little death-robots. But when they began to imitate their creators, it was time for the human race to make peace—if it could!