Pentagon says it is tracking Chinese spy balloon over United States
Pentagon Press Secretary John Kirby gave reporters details of an alleged Russian plot to produce a gruesome video that would justify invading Ukraine (Kevin Dietsch /AFP)

The Pentagon said Thursday that it was tracking a Chinese spy balloon flying high over the United States.

At President Joe Biden's request, Defense Secretary Lloyd Austin and top military officials considered shooting the balloon down but decided doing so would endanger too many people on the ground, a senior defense official told reporters.