NCP and SPLM: strange bed fellows

The National Congress Party (NCP) and the Sudan Peoples' Liberation Movement (SPLM) are sure strange bed fellows. I just wonder more than once how they keep their Government of National Unity (GONU) functioning.

Now they are trading blows again. The SPLM claimed they were not consulted when Khartoum expelled the UN special envoy Jan Pronk. Being part of the government, where were the decisions made? Are there many governments in Khartoum?

Now it is Khartoum's turn to slam the SPLM. The NCP said the visit of the Ugandan President Yoweri Museveni to Juba was wrong. Since Sudan is still one country, any president visiting should come through Khartoum and meet president Bashir first.

Who is wrong and who is right? There are more to come, it seems.