Some would question whether ‘alliance’ is the right term to describe the UK-Japan relationship. When you hear this, you might ask instead ‘is there a better word that 同盟 – “allies”? :
“Japan remains one of our most important strategic partners in the Asia-Pacific region and we welcome the opportunity to develop strong bi-lateral ties as well as demonstrate the UK’s approach to joint exercises. No nation operates alone and we want to assure Japan that they will not have to fight alone either”.
UK Land Force Commander Lt. General Patrick Sanders quoted in UK Daily Telegraph