[T]he Guardian Sustainable Business joined with sustainable-business nonprofit BSR and internet giant Yahoo to host a panel…for companies to discuss the guidelines and principles that they can use to frame their sustainability efforts…Together, the participants discussed the human rights challenges that companies face in the real world and the methods that they can use to overcome these issues…One of the biggest challenges facing international businesses is the issue of standards [that] vary so widely from country to country…The UN's Guiding Principles on Business and Human Rights, while they are nonbinding…"have clearly become a normative standard " …[T]he balance between local law, international law and international human rights standards isn't solely the concern of individual companies…Ultimately, the message of the evening was that…the decisions made in a single boardroom can have ripples that extend across industries, governments and political borders. [Also refers to Citigroup]