Putin updates nuclear doctrine allowing strikes in response to non-nuclear threats

Vladimir Putin has signed a new law that updates Russia's nuclear doctrine, allowing for a nuclear strike if Russia or Belarus is threatened by a non-nuclear country backed by a nuclear power. This change comes amid heightened tensions following Ukraine's first use of US-made ATACMS missiles against targets in Russia. The updated doctrine lowers the threshold for a nuclear response, including conventional attacks with missiles or drones. Ukraine's recent strike on a Russian ammunition depot is seen as a potential trigger for Moscow to escalate its military response. The US has recently approved the use of ATACMS by Ukraine, which can hit targets up to 190 miles away. This decision has raised concerns about the possibility of a nuclear response from Russia, as the Kremlin views such strikes as threats to its sovereignty.