Arthur Appleton wrote in The Globalist that raising tariffs will be inflationary, and is likely to reduce US exports and have a negative effect on the budget deficit. Paraphrasing Churchill he commented that raising tariffs to reduce the trade deficit “is like a man standing in a bucket and trying to lift himself up by the handle.” https://www.theglobalist.com/united-states-debt-budget-deficit-income-inequality-us-dollar-donald-trump-tariffs-democracy/ 

Appleton Luff offers congratulations to the Timorese people on Timor-Leste's acceptance as a full ASEAN member w.e.f. the October 2025 ASEAN Summit! This is the result of hard work by the Timorese government and supporters from the Asian Development Bank and other institutions. Ed Sim has advised Timor-Leste on ASEAN accession as a client since 2015.

On 17 May 2025 Arthur Appleton was awarded the Johns Hopkins Alumni Association Excellence in Teaching Award for Academic Year 2024-2025. The award was presented in Bologna, Italy at the SAIS Europe graduation ceremony.