It is a national security issue. The best and overt example of "narrative" failure is Maria Butina.
The political "narrative" has been tapped by Russia and manipulated to it's goals. Trump. There isn't anything to say. The Republican narrative is a failure in the truth of which the USA operates.
The Republican "narrative" rejects science, rejects legal underpinnings which treat all Americans equally and has highjacked the best interest of the American people deferring to the wealthy and religiously devoted right into the ballot box.
The Republicans reject the truth which is the very basis of USA laws and justice. When Republicans reject the truth they are a national security issue.
The Republican narrative has allowed the Russians to harness the political system of the USA. The power of Russian invasion has been stupidly harnessed by the Republican leadership and they intend to continue it as if they have control of it. They don't. The Russians, primarily Putin, believe they have control of the "narrative" and will continue to seek paths to end the democracy of the USA. Deferring to "Trump" as a political default setting, the Republicans are providing the path Russia currently has invested in as a methodology to end the USA democracy. It is working and McConnell thinks he has control.
There is control within the "narrative" as demonstrated by the continuing surprises of Trump. His abuse of power, the chuckling behind closed doors that Trump is a brilliant strategist. That is Trump, that is Putin.
The truth is the only political narrative the USA electorate should be invested in. Where the political morons of the USA fail the country, I think it is called a documentary.