Pete Buttigieg says Donald Trump’s decision to “pull out” of a previously agreed presidential debate is an “extraordinary show of weakness,” especially for a candidate whose “calling card” is being a tough guy. The Transportation Secretary also observed the Trump campaign has been unable to adapt to President Joe Biden withdrawing from the race and endorsing his Vice President for the top of the ticket. “Former President Donald Trump’s campaign on Thursday said it will not commit to a debate against Vice President Kamala Harris, at least until the Democratic Party makes a formal decision on it…