How can mediators deal with unethical behaviour in mediation? How can we deal with downright and obvious intentional lies of parties in mediation? Are there any legal, factual or ethical sanctions we could use in such situations? Should mediation confidentiality privilege for acting in bad faith be reevaluated? Are there cultural differences to demand the truth in mediation? Are there any obligations of mediators if misbehaviour or unwillingness to continue the mediation in good faith becomes obvious, e.g. in Caucus sessions?