As Russia deadline nears, Trump starts nuclear saber rattling 

Welcome to The Hill’s Defense & NatSec newsletter {beacon} Defense &National Security Defense &National Security   The Big Story  As Russia deadline nears, Trump starts atomic saber rattling  President Trump is rattling the U.S.’s formidable atomic saber amid his increasing vexation with Russian President Vladimir Putin’s refusal to halt the warfare successful Ukraine. © AP Trump last…