David E. Sanger

Under the Trump administration, the traditional structure of White House oversight of American offensive and defensive cyberactivities is being dismantled.

If there's a cyberattack from China or Russia or Romania or Mexico, it may well run through a server in another country. And it may take months before you know where it really came from.

If you go in to vote, and you are no longer confident that the vote that you put in is the way it's going to get recorded because you don't know if the Russians or someone else have gotten into the voting system, that undercuts your trust in the democratic process.

Although Mr. Trump will not be able to pull the United States out of the Paris climate accord, he can legally ignore its provisions, in keeping with his questioning of the existence of man-made climate change.

A Trump presidency will plunge the United States into an era of unknowns that has little parallel in the nation's 240-year history.

Cyberattacks have long been hard to stop because determining where they come from takes time - and sometimes the mystery is never solved.

In an age of reckonings, when so many bills have come due, Obama has made the case for an America that can no longer do it all. It must pick its fights.

When Japan was on the rise, American governors would come to inspect Toyota City and study 'just in time' manufacturing to increase efficiency; when America was at its peak in the late 1990s, the world beat a path to its venture capitalists.

As we put autonomous cars on the road, connect Alexas to our lights and our thermostats, put ill-protected Internet-connected video cameras on our houses, and conduct our financial lives over our cell phones, our vulnerabilities expand exponentially.

The United States Cyber Command was created partly in response to a Russian hacking attack that long predated the 2016 election.

Once cyber crosses into the realm of the physical, then it's a physical attack, but it starts with cyber. And the idea of a cyber attack being able to take control of machines - that becomes a scary process.

There are certainly some secrets the government needs to protect, but many of the most important clues about revolutions, nuclear transfers, and new military sites can be found online, in open chat rooms and commercial satellite photos.