What are the political and diplomatic ramifications of Nancy Pelosi’s visit to Taiwan? Post US Bureau chief Rob Delaney analyses how the House Speaker’s visit has changed US politics, the G7 reaction and if her agenda included lobbying Taiwan’s semiconductor industry; Post diplomacy expert Shi Jiangato unpacks the nationalist and political pressures on Xi Jinping and how mainland analysts view the visit; Asia correspondent Maria Siow reports on reaction from Japan, South Korea, Vietnam and the…