The government initiated a crackdown in the provinces as well; in Oromia Region the authorities used concerns over insurgency and terrorism to use torture, imprisonment, and other repressive methods to silence critics following the election, particularly people sympathetic to the registered opposition party Oromo National Congress (ONC). The government has been engaged in a conflict with rebels in the Ogaden region since 2007. The biggest opposition party in 2005 was the Coalition for Unity and Democracy (CUD). After various internal divisions, most of the CUD party leaders have established the new Unity for Democracy and Justice party led by Judge Birtukan Mideksa. A member of the country's Oromo ethnic group, Birtukan Mideksa is the first woman to lead a political party in Ethiopia.