KAMPALA, April 25 -- The ongoing bloodshed in South Sudan is another manifestation of the international community's lack of urgency to solve the crisis that has seen thousands of people killed and millions made homeless, a Ugandan military spokesman has said.

Lt. Col. Paddy Ankunda blamed the current spate of violence on the South Sudan warring parties and the United Nations.

"The warring parties are being insensitive to the people's wishes. We expect them to be engaging in a political process in Addis Ababa, and this is not what they are doing," he told Xinhua on Thursday.

"We have read that rebels moved into Bentiu and killed hundreds of civilians. That is not what they should be doing. They should be talking."

Uganda deployed its troops in South Sudan in December after fighting broke out between soldiers loyal to President Salva Kiir and his former deputy Riek Machar.

The killings of civilians forced the Ugandan military in Bor, a South Sudan town, to deploy its troops at a UN camp even without a mandate.

"We moved in without a mandate because civilians were being butchered. So we defeated the attackers and we secured and protected the UN camp," he said.

"Now we have moved out of the UN camp except that we have an understanding with the UN Commander there that if anytime a situation arises, the UPDF (Ugandan military) will move in to protect them," he added.

The Ugandan military was concerned that the security situation in South Sudan continued to deteriorate, he said, adding that the international community should show more commitment to end the bloodbath.

"We are equally concerned. For the areas where we are, for example Bor, Nisitu, Juba, we have told these rebels if they dare attack, should they dare attack these positions where UPDF is, they will do it at their own peril," he said.

Ankunda said the Ugandan military would not expand its deployment in South Sudan even though there was continued fighting in other parts of the country.

"We have no intention at all, we have no intentions whatsoever to move beyond the positions that we occupy. Our forces are in defensive positions in Bor town, Juba city and Nisitu. We have no mandate whatsoever to move beyond those positions," he said.

Although fighting is continuing, Uganda is under immense international pressure to withdraw its troops. Uganda said it could not withdraw its troops without any other force being deployed.

"We cannot leave a vacuum and that is very clear. We cannot withdraw or pull out and leave a vacuum that can be taken advantage of by these militia killing people. They have already killed people in Bor, assuming we were not there, that would have been a blank check for a genocide," the spokesman said.

Ankunda said the Ugandan military was waiting for troops from the Inter-Governmental Authority Development IGAD), whose member countries had agreed to deploy.

"When the IGAD forces deploy, UPDF will leave, we are not dying to be in South Sudan," he said.