Washington — Sebastian Gorka, a national security aide to President Trump, has signaled interest in becoming the next director of the National Counterterrorism Center, according to two U.S. officials who spoke to CBS News.  The position would place Gorka at the hub of the nation's counterterrorism enterprise at a time of unusual strain and redefinition across the national security apparatus. It has been moving toward an "America First" framework that emphasizes restraint abroad, despite Trump