Melting glaciers in the Himalayas or the Andes, more frequent storms in the Caribbean or Oceania, changing weather patterns in Africa or the Middle East: the challenges posed by climate change are enormous. The repercussions raise geopolitical questions, have implications for livelihoods and development, and require a strategic response to ensure sustainable development. Since the start of the climate diplomacy initiative to address these challenges, hundreds of decision-makers and experts as well as thousands of citizens have participated in regional roundtables from Bogotá to New Delhi, executive briefings and consultations from Wellington to Port of Spain, and events at climate conferences from Durban to Doha. The objectives at the core of these activities are to share viewpoints, jointly identify priorities and develop common strategies to address climate security challenges. The new booklet on climate diplomacy, building upon the 2012 edition, documents this ambitious political process and progress in Germany to engage stakeholders, partner countries and regional organisations. It also highlights the achievements and key messages distilled from the joint initiative on climate diplomacy by the German Federal Foreign Office and adelphi.