Russian warships and nuclear-powered submarine arrive in Cuba
                        
                                                    
                                
                                    A Russian navy frigate and a nuclear-powered submarine churned into Havana harbor on Wednesday, a stopover the U.S. and Cuba said posed no threat but which was widely seen as a Russian show of force as tensions rise over the Ukraine war.                                 
                            
                        
                        
                                                    
                        
                        
    
    
        
            
            
        
        
    
                        
                            A Russian navy frigate and a nuclear-powered submarine churned into Havana harbor on Wednesday, a stopover the U.S. and Cuba said posed no threat but which was widely seen as a Russian show of force as tensions rise over the Ukraine war.