5. Stresses the special vulnerability of people living in mountain environments, in particular local communities and indigenous peoples, often with limited access to health, education and economic systems and particularly at risk because of the negative impact of extreme natural phenomena, and invites States to strengthen cooperative action, with the effective involvement and sharing of knowledge and experience of all relevant stakeholders, including traditional knowledge of indigenous peoples living in mountain areas and knowledge of local mountain communities and their cultures, by strengthening existing arrangements, agreements and centres of excellence for sustainable mountain development, as well as exploring new arrangements and agreements, as appropriate;