ELECTIONS    13 In 2016, ODIHR continued to offer a free e-learning course for election observers, in English and Russian. Launched in 2012 for short-term observers, and supplemented in 2015 with a component aimed at long-term observers, the course remains popular with a wide-range of participants involved in elections from both government and civil society, with over 3,200 people from more than 150 countries in the world having ­completed it to date. INTERNATIONAL CO-OPERATION Throughout its activities, ODIHR continues to promote co-ordination and collaboration with its international partners, as well as with citizen observer groups. This co-operation is crucial to ensuring consistent messages and communication of recommendations. ODIHR has continued to join with partners from the OSCE Parliamentary Assembly, the Parliamentary Assembly of the Council of Europe, the European Parliament, the NATO Parliamentary Assembly and the Congress for Local and Regional Authorities in observation and the delivery of post-election statements. Co-operation has also continued with citizen observer groups and various observer networks, including the Global Network of Domestic Election Monitors. During 2016, ODIHR also regularly engaged with international partners within the framework of the Declaration of Principles Group for International Election Observation, with a particular focus on follow-up activities and exchanging good practices. The head of a polling station commission in Tashkent explaining voting procedures to Ambassador Peter Tejler during Uzbekistan's presidential election, 4 December 2016. (OSCE/Thomas Rymer) Ambassador Audrey Glover (r), Head of the ODIHR election observation mission for the parliamentary elections in Mongolia, speaking with the head of the precinct election commission at a polling station in Ulaanbaatar, 29 June 2016. (OSCE/Thomas Rymer)