I read that “senior aides” to President Trump have more severely restricted access to his phone calls to foreign leaders. Recent events surely provoked this. I don’t think these restrictions are intended to strengthen national security, but are an attempt to draw a veil of secrecy around Trump’s ineptitude and mental illness. 

If this is their goal, they will also have to do something to control the flow and content of his tweets, for in his tweets the President displays his real personality.