South Sudan will soon acquire anti-aircraft missiles to defend its territory against air attacks it says are frequently carried out by warplanes from neighboring Sudan, the South Sudanese military said on Wednesday.

Since South Sudan became the world's newest independent nation in July, 2011, its government has accused northern neighbor Sudan of continuing aerial bombing raids on South Sudanese territory, a charge routinely denied by Khartoum.

US Secretary of State Hillary Clinton has also called on Sudan to halt what she called "provocative" air bombardments.