we know moses kipsiro is for real as his 12:50 best at 5k shows, uganda is a neighbor country to kenya, similar lifestyles very few have money, a huge amount of the way people get from place to place is by foot (example walk or run to school) if you look at the people in uganda they are similar in body type to kenyans (ectomorphs meaning skinny) i would think the talent in uganda would be similar to kenya's though their running program is not nearly as developed, still they had a 9:16 female steepler a few years ago when that was the record, they have another runner boniface kiprop wha has run a 26:41 for 10k.
uganda, tanzania (bayi, shahanga, ikaanga, nyambui etc) and other countries near kenya i am sure have tons of undeveloped distance talent. as countries in west africa have lots of undeveloped sprint talent, nigeria i would think has so much undeveloped sprint talent, with good coaching, facilities and nutrition, they could surpass jamaica and maybe even the USA.
sorry for rambling off topic, but yes uganda absolutely could be a force in distance running if they want to be.