Read the 1949 Washington Treaty which founded NATO, which is 14 articles long: https://www.nato.int/cps/en/natolive/official_texts_17120.htm

Read about the principle of collective defence at the heart of NATO’s founding treaty: https://www.nato.int/cps/en/natohq/topics_110496.htm

A BBC News article entitled ‘Poland stokes fears of leaving EU in 'Polexit'’: https://www.bbc.co.uk/news/world-europe-58840076

An article in The Guardian entitled ‘Frexit, Nexit or Oexit? Who will be next to leave the EU?’: https://www.theguardian.com/politics/2016/jun/27/frexit-nexit-or-oexit-who-will-be-next-to-leave-the-eu

A Working paper published by the Asian Development Bank on ‘Disintegration of the EU and the Implications for ASEAN’: https://www.adb.org/publications/disintegration-eu-and-implications-asean

The battle for Marawi in pictures, published by Al Jazeera: https://www.aljazeera.com/gallery/2017/10/30/gaining-ground-the-battle-for-marawi/

Read about the Initiative for ASEAN Integration and Narrowing the Development Gap: https://asean.org/our-communities/initiative-for-asean-integration-narrowing-development-gap-iai-ndg/

An article published by The Asean Post entitled ‘‘Our Eyes’ to combat terrorism’ by Angaindrankumar Gnanasagaran: https://theaseanpost.com/article/our-eyes-combat-terrorism

Asia Conflict Watch is a blog providing news and analysis of conflict, terrorism, peace-building and post-war issues in the Asia-Pacific. Read their article on ‘How Marawi Pushed ASEAN Nations to Join Forces to Tackle Terrorism’: https://asiaconflictwatch.com/2018/02/16/how-marawi-pushed-asean-nations-to-join-forces-to-tackle-terrorism/