Ajai Malhotra Stockholm (Nairobi; 1982); contribution to the drafting of the 1990 London Amendments to the Montreal Protocol on Substances that Deplete the Ozone Layer, Convention on Biological Diversity, UN Framework Convention on Climate Change, Rio Declaration on Environment and Development, Statement of Principles on Forests, and Agenda 21; and participation in the UN Conference on Environment and Development (Rio de Janeiro; 1992). He was a member of the UNEP group of legal experts to examine the concept of "Common Concern of Mankind" in relation to global environmental issues. He was Counsellor (Information) at the Indian Embassy, Moscow, from 1993–1996, returning to
Ozone depletion framework for negotiating international regulations on ozone-depleting substances. That same year, the discovery of the Antarctic ozone hole was announced, causing a revival in public attention to the issue. In 1987, representatives from 43 nations signed the Montreal Protocol. Meanwhile, the halocarbon industry shifted its position and started supporting a protocol to limit CFC production. However, this shift was uneven with DuPont acting more quickly than its European counterparts. DuPont may have feared court action related to increased skin cancer, especially as the EPA had published a study in 1986 claiming that an additional 40 million cases and 800,000 cancer