On the inside, every meeting with the President would be "spied" on.
Bolton does hold the key I'm sure...and it favors the President.
Bolton is militantly anti-Russian. Thus, Bolton would oppose any delay in providing aid to the Ukraine.
But Bolton would be well aware of Trump's concern for Ukrainian corruption. He would also be well aware that the aid was not held-up for some personal gain.
Bolton is NOT going to support the fairy tale that the democrats have created. This favors the President a little.