Rosneft said it had found oil in the Kara Sea off the north coast of Siberia in a joint drilling project with US oil giant ExxonMobil.
UEFA announced that it had opened probes for suspected breaches of financial fair play rules.
Google said it would beef up encryption of its mobile operating system, so that it would not hold "keys" to devices even if it is served with a warrant.
The White House declared the United States was at war with Islamic State radicals, seeking to rub out another semantic flap over its Syria policy.
America's former first daughter Chelsea Clinton announced in New York on Thursday that she is pregnant with her first baby, giving her parents Bill and Hillary a long-awaited grandchild.
China's Communist Party leaders this week emerged from a closed-door meeting in Beijing bearing a raft of promises on issues from the controversial one-child policy to the scope of the death penalty.
President Vladimir Putin's carefully stage-managed announcement that he and his wife of 30 years were divorcing came as a true shock in Russia.