Trust your gut instinct over spreadsheets. There are too many variables in the real world that you simply can't put into a spreadsheet. Spreadsheets spit out results from your inexact assumptions and give you a false sense of security. In most cases your heart and gut are still your best guide.
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.