Disruption to Venezuela's exports because of industrial unrest has only added to market nervousness.

ECONOMIST: Oiling or spoiling the recovery? | The

The region's rapid pace of development, combined with workers' new-found muscle-flexing, has led to some industrial unrest.

ECONOMIST: Brazil's north-east

Industrial unrest, spiralling costs and competition from budget airlines have combined to force Alitalia to the brink in recent years.

BBC: Workers at Alitalia demonstrate

The attack came on the heels of industrial unrest at the Algerian gas facility, where hundreds of Algerian workers went on strike June 21.

WSJ: Algeria Probes Possible Role of Local Workers in Attacks

In the case of aluminium, this is partly because of industrial unrest in North America, which is threatening to disrupt supplies from at least two plants, one in the United States and the other in Canada.

ECONOMIST: The magnetism of metals

Not only has Greece failed to reach its targets for reducing the deficit but, as the Financial Times reports, it believes that social unrest and industrial action are taking a toll on the economy.

BBC: Deadlock in the eurozone