Nina Srinivasan Rathbun

Una mujer en Crimea mira la retransmisión televisiva del discurso del presidente ruso Vladimir Putin el 21 de febrero de 2023. Stringer/AFP vía Getty Images

Aumenta la tensión nuclear tras suspender Rusia el último acuerdo sobre armas nucleares con EE.UU.

El anuncio de Putin de que Rusia dejará de participar en el Nuevo START pone en pausa el último acuerdo sobre armas nucleares que queda entre Estados Unidos y Rusia.
This Russian short-range cruise missile, the Iskander-K, can carry nuclear warheads for several hundred miles. Russian Defense Ministry Press Service photo via AP

What are tactical nuclear weapons? An international security expert explains and assesses what they mean for the war in Ukraine

Tactical nuclear weapons were designed to be used on the battlefield rather than for strategic defense, but that doesn’t mean there’s a plausible case for using them.
A man reads an Iranian newspaper with a headline in Farsi that says, ‘The night of the end of the JCPOA,’ or Joint Comprehensive Plan of Action. Atta Kenare/AFP via Getty Images

Iran and the US appear unlikely to reach a new nuclear deal – leaving everyone more unsafe

A nuclear nonproliferation expert explains why Iran was always unlikely to return to the 2015 international agreement that limited its nuclear weapon development.
A caution sign marks the Hanford Nuclear Reservation near Richland, Wash., where plutonium for nuclear weapons was made. Jeff T. Green/Getty Images

Russia is sparking new nuclear threats – understanding nonproliferation history helps place this in context

Despite decades of progress on nonproliferation, Russia’s new threats of nuclear strikes bring to mind that convincing countries to reduce their nuclear weapons has long been very difficult.

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