Mia Farrow, the actress and activist, has asked Blackwater, the US private security company active in Iraq, for help in Darfur after becoming frustrated by the stalled deployment of a United Nations peacekeeping force.

Ms Farrow said she had approached Erik Prince, founder and owner of Blackwater, to discuss whether a military role was either feasible or desirable.

She acknowledged that many people might have reservations about Blackwater being involved in Darfur – the company’s men were involved in the fatal shooting of 17 Iraqi civilians last September – but said the threat of violence to refugees meant all options had to be explored.

Mr Prince hasraised the possibility of a role in Darfur for security companies.

Ms Farrow, who represents Dream for Darfur, a human rights group, and other lobbyists this week lambasted the UN Security Council for its “shameful” failure to halt killings in the Sudanese province.

The activists, who claim China has used the threat of its Security Council veto to prevent tough sanctions on its ally, urged the UN to stand up to Khartoum in the deployment of a 26,000- strong force. They said the Sudanese government had abused its right to approve contingents in an effort to ensure only relatively poorly trained and equipped African troops were assigned.