Is there a connection between former President Donald J. Trump’s pressure campaign on Ukraine, the Russian invasion and the events of Jan. 6, 2021?The journalist Robert Draper talked to Fiona Hill, John Bolton and other former Trump advisers to gauge the extent to which the ex-president’s actions had a ripple effect.This story was written by Robert Draper and recorded by Audm. To hear more audio stories from publications like The New York Times, download Audm for iPhone or Android.  Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app.