Dmitry Medvedev has traveled a long way from his time as Russian president, when he once stood beside then-US President Barack Obama and declared that “the solution of many world problems depends on the joint will of the United States and Russia.

Medvedev currently serves as Deputy Chairman of the Security Council of the Russian Federation. Notably, he is now a trusted ally of Russian President Vladimir Putin.

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.