Germany also rattled the markets and its partners by introducing a unilateral ten-month ban on naked short-selling (when securities are sold that are not owned or borrowed, which is the practice in conventional short-selling).

ECONOMIST: Business this week | The

But it is the rise of the left-wing Syriza grouping and its charismatic young leader, Alexis Tsipras , that has really got the markets and the European Union establishment rattled.

CNN: What if Greece can't manage payback?

They expect Draghi to deliver in Europe and bring relative calm to rattled overseas markets.

FORBES: Gold, The Silent Killer: Yellow Metal's Up Big And Could Rally Further

News of more deaths from the disease in Indonesia helped push stockmarkets down in Europe this week, and rattled south-east Asian currency markets.

ECONOMIST: Down with the flu | The

This rattled already shaky world stock markets and once again called into question the survivability of the Euro currency.

FORBES: P.M. Kitco Metals Roundup: Comex Gold Ends Slightly Lower, But Up From Daily Low, As Bargain Hunters Step In

Yet for almost two years tiny Greece has had the entire world trembling in fear every few months, world markets in confusion, and world leaders rattled.

FORBES: Entire Global Economy At Mercy Of Tiny Greece?

Markets are still rattled with the possibility of contagion, with Bahrain and Oman against the ropes, politicians and consumers better hope Saudi Arabia gets by this one unscathed.

FORBES: How Do Revolutions In North Africa Affect Oil Companies' Stock Performance?

Oil markets have been rattled by an escalation of hostilities between the OPEC oil cartel and the IEA, oil watchdog for rich western nations.

FORBES: Oil On The Verge Of A 4-Day Rally As OPEC-IEA Conflict Escalates