What You Need to Know: Vladimir Putin has signed an update to Russia's nuclear doctrine, coinciding with the 1,000th day of the war in Ukraine. While the doctrine reaffirms nuclear weapons as a last resort to safeguard Russia's sovereignty, it expands the scope of threats warranting nuclear deterrence, including attacks by non-nuclear states backed by nuclear powers.

-The change follows the U.S. approval for Ukraine to use long-range missiles inside Russia, with Moscow warning it could interpret such strikes as a NATO-led attack.

-Dmitry Medvedev has cautioned that this shift increases the risk of World War III.

Russian President Vladimir Putin approved changes to his country's nuclear doctrine on Tuesday, which also marked the 1,000th day of the war in Ukraine. It is unclear if the signing of the decree was meant to coincide with the grim milestone for Russia's so-called "special military operation," but as it was first proposed in September, it does seem that the Kremlin carefully timed it.

Russia's nuclear doctrine updates the degree signed by Russian President Boris Yeltsin on........

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