Q: Dear Ethics Lawyer, Last year, I negotiated a complex and lengthy contract for a client. The client has now been sued for breach of the contract. The case will turn on a pivotal issue of contract interpretation and the intent of the parties. The client will likely want me to be a witness as I was part of all the dealings with the other side. Can our firm defend the suit? What if my recollection of the negotiations differs substantially from our client’s on a critical issue?