American singer Taylor Swift’s highly anticipated Eras Tour has ignited a diplomatic row in Southeast Asia, sparking controversy and criticism from neighboring countries over an exclusivity clause negotiated by Singapore Prime Minister Lee Hsien Loong. The clause prohibits Swift from performing elsewhere in the region, leaving Thailand and the Philippines disappointed and branding the deal as “unfriendly.” The Exclusive Arrangement Taylor Swift’s six sold-out shows in Singapore from March 2 to 9...