After a rendition of My Way and a saxophone accompaniment that felt closer to crooning uncles at a wedding party than high-stakes diplomacy, Malaysian Prime Minister Anwar Ibrahim and his Thai counterpart Anutin Charnvirakul announced the serious business of squashing a damaging trade row and bringing greater security to the porous border between the nations. The pair, long-standing friends, also share a love for public spectacle, with Anutin playing the classic song popularised by Frank Sinatra...