He told world leaders there that countries must work together to clamp down on tax avoidance.

BBC: David Cameron wants European Union reformer legacy

Police, environmental inspectors and other state agencies are being pressed to work together more closely to clamp down on illegal logging.

ECONOMIST: The economy booms, the trees vanish | The

Prime Minister Julia Gillard has pledged to clamp down on 457s, the temporary work visas granted to skilled migrants eager to share the spoils of the country's mining boom, which has helped power more than two decades of uninterrupted annual growth.

WSJ: Australia Attracts More Than $1 Billion in Potential Investment Under Visa Program