Deadly tornadoes carve destructive paths through Tennessee neighborhoods; Tens of millions under flood alerts as storm system moves across Northeast; Gaza's health system collapsing, World Health Organization reports; and more on tonight's broadcast.

Zelenskyy makes urgent plea to Congress for more aid in war against Russia; Biden says Israel is losing support amid ground offensive in Gaza; A rare look at America's new technology to counter China's space threat; and more on tonight's broadcast.