U.S. delegate to the United Nations Susan Rice expressed her country''s deep concern over the escalating tension between Sudan and the State of Southern Sudan in recent days. In a speech before a UN Security Council session held to discuss the to discuss the situation in Sudan aired over Radio Sawa, Rice said we condemn in the strongest possible meanings the aerial bombardment by the North of targets in southern Sudan, especially the shelling of the Aida refugee camp, which includes more than twenty thousand people. Rice said the news confirmed by the United Nations representative in South Sudan and by workers in the Office of the United Nations Commissioner for Refugee. Rice called the parties to present commitment to restraint and called on the Khartoum government to stop bombing and attacks immediately. She called on the two parties to exercise self-restraint and urged the government of Sudan to stop all attacks against the South immediately.