Even the PDRK must know a couple of MiG21s even in excellent shape will add little operational or tactical value to their AF. Against SK, Japan etc a couple of Mig-21s might as well be paper airplanes.Well, we all new that the "military equipment to be repaired," was a falsehood to begin with.
This stuff was buried under 10,000 tons of sugar and not on the manifest. It was hidden.
The Migs and the engines are not in need of repair.
Now, two aircraft with nine engines and a few anti-air missile systems are not a huge help to North Korea, so you have to ask yourself why they would risk it?
Maybe I was a test run to see if they could get away with it, and then send more weapons later?
Maybe they were planning to sell them to someone else from North Korea? Who knows?
The SAMs depending on the type can at least play a defensive role but the fighters seem odd especially they are much larger and much more difficult to stash.
The most logical answer is probably the 'deal' came with the sugar as in if you want sugar you have to buy these too. Who knows? when you have two of the most secretive and 'crazy' heads of state making deals nothing should be surprising.
For the sake of the NK people I hope they at least let the sugar through since that portion is at least legit.