A 29.6-carat blue diamond is discovered in Cullinan mine in South Africa, which is famed for its production of the rare stones.

American car giant General Motors are offering racing enthusiasts a 'performance data recorder' on its Corvette range.

Two Palestinian militants are killed by an Israeli air strike in the Gaza Strip, Palestinian and Israeli officials say.

Argentina introduces new curbs on purchases from international websites such as Amazon, in a bid to stop foreign currency reserves falling further.

An Iranian-American engineer is indicted for attempting to ship stolen documentation on a high-tech military plane to Iran, authorities say.

The Geneva II peace conference, aimed at finding a political solution to the three-year conflict in Syria, is due to start in Switzerland.

Ukraine's PM threatens to clamp down on demonstrators if "provocateurs" do not stop violence, as tough new anti-protest laws come into force.

The chief executive and senior management of IBM, the world's biggest computer-services provider, say they will forgo their bonuses for 2013.