Former Russian president Dmitry Medvedev has become embroiled in a tense back-and-forth on social media that prompted U.S. President Donald Trump to announce he had ordered the re-positioning of two U.

Former Russian president Dmitry Medvedev, who is currently serving as deputy chair of the security council of the Russian Federation, is embroiled in a social media spat with United States President Donald Trump,

Trump has said that two American nuclear submarines are “where they have to be,” after recent threats from former President Medvedev, as tensions rise between Washington and Moscow.