This quarter’s campaign finance report shows that the world’s richest man is the top political donor of this midterm election. Our reporter Theodore Schleifer explains how Elon Musk came back from a brief rift with President Trump and Republicans to become a central player in the party’s campaign to hold Congress.

Our national security and White House correspondent David E. Sanger breaks down why President Donald Trump struck a deal with President Vladimir V. Putin to import Russian diesel fuel in the coming months, despite having signed recent congressional legislation tightening energy sanctions on Russia.

As the U.S.-Israeli war with Iran continues, it’s being felt in a wider region. Eric Schmitt, a national security correspondent at The New York Times, explains how the conflict is reaching U.S. bases and why the United States is pulling back its military presence in some locations.