Why are we fighting the Lord's Resistance Army?

Recently I came out in support of Obama's escalation of US involvement in fighting the Lord's Resistance Army in Uganda.  Nevertheless, I do no pretend to be fully versed in Obama's reasoning behind the move.  Harvey Glickman provides some possible reasons:

U.S. support for the anti-LRA war has not been an unmitigated success. The National Security Council authorized training and financial support for the December 2008 Operation Lightning Thunder, a joint Uganda-Congolese-South Sudan campaign. This resulted, however, in major casualties among Congolese civilians, with 200,000 people displaced and the LRA escaping to fight another day.
Somewhat puzzling about the new U.S. deployment “to protect civilians” — as stated by the U.S. Embassy in Kampala on October 17, 2011 — is the fact that the Ugandan army announced that the Kony/LRA problem is no longer a threat in Uganda, but a regional problem. So, apparently the UPDF is joining the U.S. in an African regional conflict. Uganda has been a leader in the African Union’s battle against the al-Shabaab terrorists in Somalia, and suffered a retaliatory bombing in Kampala by them in July 2010.

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