A 'win-win situation' is a term used to describe a situation in which all parties involved benefit from the outcome. It is often used in business and negotiation contexts, where both parties are able to reach an agreement that is mutually beneficial. The term 'MUST' is an acronym for 'Mutually Beneficial, Unconditional, Sustainable, and Transparent, ' while 'ANO' stands for 'Agreement of Non-Obstruction.' Together, these two terms help to define a win-win situation.