After Dmitry Medvedev called a US ultimatum a "call for war," Donald Trump ordered two nuclear submarines near Russia, ...

Dmitry Medvedev has frequently wielded nuclear threats and lobbed insults at Western leaders on social media. Some observers ...

An international war of words erupted on July 30 when U.S. President Donald Trump squared up on social media to former ...

The president’s announcement comes amid growing frustration with Moscow and his social media spat with a top Putin associate.