The UN Security Council has unanimously approved a resolution threatening non-military sanctions against Sudan and South Sudan if they do not halt escalating violence and return to negotiations.<br /><br />The resolution endorses an African Union plan aimed at getting the two countries to step back from the brink of war and resolve their differences.<br /><br />Addressing the body after the vote, South Sudan's minister of cabinet affairs, Deng Alor, stated his government's "solemn commitment" to comply with the resolution.<br /><br />But Sudan's UN ambassador, Daffa-Alla Elhag Ali Osman, expressed reservations, saying peace will only be achieved if South Sudan stops "all forms of support and sheltering of proxy and rebel armed groups".<br /><br />Al Jazeera's Kristen Saloomy reports from New York.