Yeah the gwangju massacre definitely happened, and he definitely authorized it because the troops who did it were under the command of John Adams Wickham.
The agreed framework would have prevented North Korean nukes, had the US actually honoured it. Instead bush tore it up when he came in to office, and then John Bolton fabricated the aluminium tubes hoax to justify it, which was later wheeled out to justify the Iraq war. Then they put north korea on the axis of evil so as to have a single non-muslim state there. All of that, but mostly the Iraq war is what led north korea to develop nukes.
And yeah, the deal was "no nukes (they shut down their nuclear reactor for 12 years unilaterally as a show of good faith) AND no long or medium range ballistic missiles in exchange for $1Bn and fuel oil for heating." Good luck getting that deal now :)
