"As expected in such situation people started to panic, started to sell Bitcoin in mass (panic sale) resulting in an increase of trade that ultimately froze the trade engine, " it said.

BBC: Minted bitcoins

Much like the Clinton administration, the Bush team is banking on trade as an engine of both economic and social progress.

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With a Yahoo buyback in sight, and full control over the group, founder and CEO Jack Ma can focus on building an even better engine for online trade.

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Without trade, perhaps the most important engine of growth in poorer countries, workers in developing countries stand little chance of ever doing the same.

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The United States has been an engine for growth, for trade, for opportunity for decades now.

WHITEHOUSE: President Obama and Prime Minister Singh Press Availability | The White House

Yet because of the sheer volume of its trade with Iran, Germany, the economic engine of Europe, is uniquely positioned to pressure Tehran.

CENTERFORSECURITYPOLICY: How Europe's companies are feeding Iran's bomb

The engine of the global economy is powered by international trade.

FORBES: Eight Biggest Global Trade Offenders

Members of the trade union Unite have voted to take strike action at Mahle Engine Systems in Kilmarnock in an attempt to safeguard up to 260 jobs.

BBC: Mahle workers in Kilmarnock vote for industrial action

It bought British Airways' engine-repair centre in South Wales, and has turned this humble but essential trade into a nice little business.

ECONOMIST: Aircraft engines