https://www.theguardian.com/us-news/2017/may/24/trump-international-trip-barack-obama-europe-return

https://www.independent.co.uk/news/world/americas/us-politics/obama-china-india-world-leaders-meetings-summit-foundation-latest-a8080951.html
https://www.politifact.com/article/2018/may/22/john-kerry-was-paris-did-he-meet-iranians-he-says-/