Oh dear:
Uganda will pull its soldiers out of the African Union mission fighting Islamist group al-Shabab in Somalia, its military chief has said. Gen Katumba Wamala said the decision to withdraw Ugandan troops by December 2017 was taken because of frustration with the Somali army and military advisers from US, UK and Turkey.....Uganda joined Amisom in 2007 and has just over 6,000 troops in the 22,000-strong force.
Link:http://www.bbc.co.uk/news/world-africa-36606194

After ten years of being present in Somalia I am not surprised at this declaration, although the frustration with the barely functioning Somali army is understandable, blaming the others is odd. IIRC the USA pays most of the cost, historically training has not been in-country.

Of the other contributors, Ethiopia has always been a reluctant ANISOM member, Burundi has good reason to reduce its troop level - as the situation at home is fraught, Kenya has had a "bloody nose" and Djibouti is a new participant.