Four years after David Barnes was charged in Russia with abusing his children in Texas despite not being charged with a crime in the U.S., he is now in a penal colony.

It is difficult to determine how many foreigners have joined Russia's military. BBC Russian's analysis - which also looked at the number of foreigners killed and injured - suggests at least 20,000 may have signed up, including from countries such as Cuba, Nepal and North Korea.

Russia on Tuesday condemned what it described as "subversive external interference" in Iran's internal politics and said U.S. threats of new military strikes against the country were "categorically unacceptable.

U.S. seizure of Russian tanker marks rare escalation in sanctions enforcement against "dark fleet," but experts say move unlikely to trigger confrontation.

The state Investigative Committee said the suspected crimes were negligence, and causing death by negligence. It did not say who was under investigation.

In November, Venezuela's National Assembly approved a 15-year extension of the joint ventures between state company PDVSA and a unit of Russia's Roszarubezhneft that operate two oilfields in the South American country's western region.

Russia has strongly condemned the U.S. seizure of an oil tanker. It heralds a new chill in relations between Moscow and Washington that could spread to other areas and affect President Donald Trump’s efforts to persuade Russia to end its nearly four-year war in Ukraine.

Russia and China allegedly expanding Arctic presence for military reasons, conducting joint patrols near Alaska and Canada, top NATO commander warns.