A Russian researcher is sentenced by a court in Moscow to 15 years in a penal colony for treason.
Researcher Aleksandr Sjipljuk is the latest in a long line of scientists to be sentenced to long prison terms in Russia.
According to Russian news agencies, the 57-year-old is said to have researched hypersonic robots.
Corrected: In an earlier version of the text, the wrong researcher was named.
