US has put tariffs on imports of one-kilo gold bars.
	
	
		
			
				
					
						 
					
				
			
			
				
					
						
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				US hits one-kilo gold bars with tariffs in blow to refining hub Switzerland
Decision could upend the global bullion market, analysts say
				 
				 
  
 
		 
 
		 
 
		 
 
		 
 
		