Look at the timeline and the messy transition of power because SOMEBODY refused to accept they lost like a little bitch. Now, Biden's administration does take some blame, but considering the timeline and the amount of personnel and materials that needed to be moved....it would be an incredible feat to do it in that short of a timeline. And, it should have been something Trump started September of 2020....but didn't.
As for North Korea, I can just imagine what Fox and Friends would say if Obama met with Kim Jong Un, saluted a NK General, and then accomplished NOTHING! They would roast him...and rightfully so. But because Trump does it, the right is all like, what diplomacy!! Take the blinders off and wake up. That wasn't an A, even for effort. It was like the typical Trump move, make outrageous promises, have a bit of a spectacle and accomplish absolutely nothing.