Part 1 : The problem -- Don't bargain over positions -- Part 2 : The method -- Separate the people from the problem -- Focus on interests, not positions -- Invent options for mutual gain -- Insist on using objective criteria -- Part 3 : Yes, but ... -- What if they are more powerful? -- What if they won't play? -- What if they use dirty tricks? -- Part 4 : In conclusion -- Part 5 : Ten questions people ask about getting to yes.