For years, the agency has conducted multinational actions in Latin America, but this operation was the first to cover the Balkans and Central Asia, the officials said.
A spokesman said: "Greyhound is a multinational and their actions are heavy-handed.
The shadow treasurer, Chris Bowen, said the government had been "dragged kicking and screaming" to take action on multinational tax avoidance and was engaging in "policy on the run".
Expanding the size of the multinational force would require action by the United Nations Security Council, which gave the mandate for the existing force.
Such trials require a multicenter, maybe even a multinational, approach and concerted action from specialists, patients, and funding agencies.
For once, a bunch of multinationals which took decisive action can bask in the glow of moral superiority.
Consumers are already at a disadvantage in taking on a deep-pocketed multinational, and limiting class actions to country boundaries makes it even harder for consumers to act.
Exploring the actions of multinational companies in relation to their growing role in public health care systems raises questions about whether to consider company activities in a business or a sociological context.
It has asked the court, in a case against Shell, to restrict the only law that makes multinationals accountable, allowing actions to be brought in the US by victims who cannot sue their wrongdoers anywhere else.
