Where's The Beef?

In relation to G20 Summit here, WSJ reports that:

Dominique Strauss-Kahn, managing director of the International Monetary Fund, said coordinated stimulus amounting to at least 2% of global gross domestic product is required. That should provide a similar boost of 2% of GDP, if it's correctly coordinated, he said.

Stimulus, you said? If truly so, where is Keynes the multiplier, please?