From PBS NewsHour.

Wednesday on the News Hour, the expiration of a nuclear arms treaty between the U.S. and Russia makes the future even more uncertain for the world’s two largest nuclear arsenals. Federal agents’ use of surveillance tools to track immigrants and protesters raises questions about civil liberties. Plus, a look at Stephen Miller’s rise to prominence and influence on the Trump administration.

WATCH TODAY’S SEGMENTS
Key U.S.-Russia nuclear arms reduction treaty expires

Experts debate future of U.S.-Russia nuclear arms treaty

News Wrap: Georgia election officials challenge FBI in court

What to know about immigration agents’ surveillance tactics

Stephen Miller’s influence on the Trump administration

Former editor discusses The Washington Post’s mass layoffs

Researchers meet big setback to measuring ‘Doomsday Glacier’

Alicia Graf Mack on leading the Alvin Ailey dance company

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00:00 – Intro
02:03 – Nuclear Risks
05:15 – Experts debate future of U.S.-Russia nuclear arms treaty
12:45 – News Wrap
19:10 – ICE Tactics
26:28 – Right-Hand Man
35:25 – Sweeping Layoffs
42:18 – Melting Glacier
47:48 – Leading Alvin Ailey
54:46- Online + Goodnight