I currently use Ubuntu Linux on a standalone laptop – it has no Internet connection. I occasionally carry flash memory drives between this machine and the Macs that I use for network surfing and graphics but I trust my family jewels only to Linux.
Any agreement that you have isn't going to be based on North Korea's intentions or trust.
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Suicide is possible but not probable hanging I trust is even more unlikely for I hope that by the time I die my countrymen will have become civilised enough to abolish capital punishment.