Which challenge of democracy is faced in the following scenarios?
1.Mexico: Second free elections after defeat of PRI in 2000; defeated candidate alleges rigging.

2.Pakistan:General Musharraf holds referendum, allegations of fraud in voter's list

3.South Africa: Mandela retires from active politics, pressure on Mbeki to withdraw some concessions given to white minority.

4.International organisations: US as the only superpower disregards UN and takes unilateral action.

5.US, Guantanamo Bay: UN Secretary general calls this violation of law UN reffused to respond.

6.Saudi Arabia: Women not allowed to take part in political activities, no freedom of religion for minorities.

7.Yugoslavia: ethnic tensions between Serbs and Albanians rise in the province of Kosovo; Yugoslavia disintegrated.

8.Belgium: one round of constitutional change takes place but Dutch speakers not satisfied,; They want more autonomy.

9.Sri Lanka: Talks between government and LTTE break down, renewed violence.

10.Northern Ireland: Civil war over but Catholics and Protestants yet to develop trust.

11.Nepal: Constituent assembly about to be elected, unrest in Terai areas, Maoists yet to surrender weapons.

12.Bolivia: morales a supporter of the water struggle elected Prime Minister, MNCs threaten to leave country.