The US Department of Justice arrested a Russian in Guam for involvement in a hacking and stolen credit card ring. Moscow says he was framed.
A peace plan announced by Ukraine's president earlier this week may not get off the ground, as fighting continued with pro-Russian separatists in parts of the country's east.
Russian fighters are among the separatist forces battling Ukraine's poorly equipped military for control of eastern provinces. A pullback of Moscow's troops could defuse tensions with the West.