In negotiations, can lawyers lie to their advantage? Can lawyers ethically use bullying or threatening to benefit clients? Professor Carrie Menkel-Meadow of UC Irvine Law explores the boundaries of ethics requirements in negotiations. In part 1 of this 2-part series, she explores the rules on truthful statements, fraud, misrepresentation, and disclosure; facts versus opinions; and the tactics and behaviors permissible and impermissible in negotiations, including bluffing and puffing.