Fears about China’s increasingly bellicose actions in the South China Sea and the “truancy” of senior US leaders from recent Southeast Asian diplomatic events will be among the key talking points at this weekend’s meeting of regional defence chiefs, analysts said, despite host nation Thailand’s hopes participants will steer clear of controversial issues.The Asean Defence Ministers Meeting (ADMM) Plus in Bangkok will feature the defence chiefs from the 10-nation bloc and eight global partners,…