Thousands of people have fled villages in Sudan's South Kordofan region amid an assault by Sudanese forces.

They say the army has launched a deliberate campaign to bomb and starve civilians in the disputed region where it is fighting rebels aligned with South Sudan. Almost every day, villages are hit by bombs, rockets and artillery.

Many are sheltering in caves, and food is running scarce. The UN estimates about 300,000 people in the Nuba Mountains might starve if they do not get help.

Al Jazeera's Peter Greste travelled to the remote region for this exclusive report.

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• Security Council Demands Ceasefire
• UN Chief Urges Khartoum, Juba to Compromise
• Air Strikes in South Kordofan and Blue Nile State
• The Seen and the Unseen in Darfur
• Hundreds Flee Fresh Violence on Sudanese Border
• UNHCR seeking $145 Million in Urgent Funds for Sudanese Exodus

Citizens Urged to Topple Sudan Govt

• Opposition Calls on Bashir to Stop Waging War and Step Down
• Nation Vows to Continue War in S. Kordofan Until the End
• Bashir Mobilizes Paramilitaries, Lashes U.S.
• Khartoum Accuses U.S. of Backing Rebels
• SRF Rebel Leader Denies Country's Participation in Border Clashes
• UN Top Official in Nation Meets With Bashir to Discuss Deescalating Tensions

Clashes on Sudan-South Sudan Border

• Air Force Bombs Oilfields in South
• Bashir Cancels Trip to South Due to Border Clashes
• Sudan and South Sudan Forces Clash on Border