Khartoum: It is unfair for the UN to talk of sanctions against Sudan as well as South Sudan when it should be working to end the South's "repugnant" occupation of the north's main oilfield, Khartoum said on Thursday. (Agencies)
"It is incumbent upon the United Nations... to end the occupation of South Sudan against a territory of an independent sovereign state," Omar Dahab, who heads a foreign ministry crisis team on the issue, told a news conference.
"The Security Council has to take necessary measures to maintain international peace and security in any part of the world," he added.
Clashes erupted last month at Heglig on the disputed border, but escalated last week with waves of aerial bombardment hitting the South, and Juba's seizure of the area's oilfield on April 10.
There are widespread fears the fighting will spread. It is already the worst since South Sudan won independence in July after a 1983-2005 civil war which killed two million people.
Sudan has vowed to react with "all means" against the Heglig invasion which many in Khartoum say occurred with surprising ease, and has been called a humiliation for the military.
On Wednesday, the UN Security Council discussed possible sanctions against Sudan and South Sudan in a bid to halt a wider war but Dahab said penalising both the aggressor and the victim would be wrong.
"It is clear that that is not fair," he said. "Logically it should be directed to the aggressor."
The 15-nation council again demanded that South Sudanese troops pull out of Heglig and that the north should end cross-border air attacks, said Susan Rice, the US ambassador and council president for April.
Rice told reporters the council discussed ways to leverage its influence "to press the parties to take these steps and included in that a discussion potentially of sanctions".
Air strikes have killed several South Sudanese civilians and earlier this week damaged a UN peacekeeping camp in the South's Unity State.
The two Sudans are locked "in a logic of war" with hardliners controlling both countries, international peace envoys told the council. Although South Sudan disputes it, Heglig has been internationally recognised as being part of Sudan.
Sudan's economy is in crisis after the loss of oil revenue from South Sudan's separation. Khartoum is already under United States sanctions imposed in 1997 over human rights and other concerns.
Khartoum: It is unfair for the UN to talk of sanctions against Sudan as well as South Sudan when it should be working to end the South's "repugnant" occupation of the north's main oilfield, Khartoum said on Thursday.