Ten Southeast Asian leaders are likely to discuss a range of sensitive issues at a summit of the Association of South East Asian Nations (ASEAN) on Monday, from oil prices and trade to air pollution and bird flu. Some issues will be discussed among all the ASEAN leaders while others will be raised either in bilateral talks held on the sidelines of the Kuala Lumpur summit or in wider East Asian talks that immediately follow the ASEAN summit. China, Japan, South Korea, India, Australia and New Zealand will attend the East Asian summit while Russia will be an observer, Reuters reported.