I think it's a tad different. There aren't a pile of Islamoterrorists using the Congo as a training / arming waystation.
The Sudan funds terrorism. Why aren't we there bombing them? There's more of a connection to terrorism in the Sudan and Saudi Arabia than Iraq. When the US goes about missions they never stopped to think it was 'colonial'. Who cares what other people think? If we're going to engage in foreign diplomacy then we should offer it to people who really need it.
Whenever the Marxists lose a battle, we get press coverage and hand wringing and concern and calls for outside intervention. Whenever they win and slaughter their opponents, we hear nothing.