Late on Thursday evening a US air force plane touched down at Taiwan’s Songshan airport. Unannounced, it attracted a fraction of the fanfare that greeted the plane carrying US speaker Nancy Pelosi three weeks earlier, but was still broadcast live on television. Traveling solo, senator Marsha Blackburn stepped onto the dark tarmac where she was met by a foreign ministry official, and they quickly moved inside the terminal. “I just landed in Taiwan to send a message to Beijing – we will not be bullied,” Blackburn tweeted. The solo visit…