【明報專訊】THE AMERICAN INSTITUTE IN TAIWAN (AIT) is to open its new office complex in Taipei tomorrow (June 12). Since the opening will overlap the Trump-Kim summit, Washington is only dispatching Assistant Secretary of State Marie Royce to the ceremony. The once-anticipated groundbreaking attendance by US National Security Adviser John Bolton is not happening. Still, in recent months, the US has made continuous moves on the Taiwan issue. Not only has Trump backed Taiwan by arms sales, but he has also openly shown diplomatic support for the island. All these ploys have raised tensions in the Taiwan Strait, which is certainly not glad tidings to Taiwan.