Why does Lewis choose a tweet from Donald Trump as the epigraph to The Fifth Risk? Why is it significant that it received over 100,000 likes?

Lewis uses interviews to prove his argument about the Trump administration’s lack of preparedness and its potential effects. Is this an effective strategy? What does it mean that he doesn’t include interviews from members of the Trump administration?

How does Lewis weave climate change throughout his narrative without making it an explicit part of his argument?