$1.$ UN Environment engages in partnerships to multiply its results. While recognizing the value of cooperation with relevant partners, it is important to ensure that partnerships are undertaken in a manner that maintains the organization$$s integrity, impartiality and independence as well as its character as an international organization of Member States. In vetting potential partners, a due diligence process is carried out. What aspects and documents should be investigated when carrying out a due diligence process on a potential not for profit partner?