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Sudanese armed forces raise their weapons during a visit by President Omar al-Bashir in Heglig, Sudan, Monday, April 23, 2012. Sudanese warplanes bombed a market and an oil field in South Sudan, killing at least two people hours after Sudanese ground forces reportedly crossed into South Sudan with tanks and artillery, elevating the risk of all-out war between the two old enemies. Al-Bashir vowed Monday to press ahead with his military campaign until all southern troops or affiliated forces are chased out of the north.(AP Photo)

Sudan nations at war

South Sudan's president Salva Kiir said Apr. 24 its northern neighbor has "declared war" on the world's newest nation, just hours after Sudanese jets dropped eight bombs on his country.