“When we confront foreign interference in American elections, it is important for us to avoid thinking politically as Republicans or Democrats and instead to think patriotically as Americans. Our response must not depend on which side was victimized.”That last sentence is key.
Rosenstein is clearly avoiding stating the fact that the side which was obviously victimized is not the one in power, thus tiptoeing around the legitimacy of the current administration, much to the displeasure of Democrats everywhere. But he's also sending a message to Trump acolytes that his presidency might be built on quicksand and to prepare accordingly.
"We'll see", said the blind man.