The pest gets worse. Looking at his own Wikipedia page...
"In April 2004 he called on journalists to obey his government "or go to hell". In June 2005 he stated on radio and television that he has allowed "too much expression" in the country."
"Jammeh has been linked with the 2004 massacre of 44 Ghanaian migrants and 10 other ECOWAS nationals."
"In January 2007, Jammeh claimed he could cure HIV/AIDS and asthma with natural herbs. Some patients are said to have improved through his treatment, but he has also been criticized for promoting unscientific treatment that could have dangerous results.. The full text of his speech seems to suggest that the 'cure' may in fact be addressing intestinal parasites ("With regards to HIV/Aids, they should be kept at a place that has adequate toilets facilities because they can be going to toilet every five minutes.").
Fadzai Gwaradzimba, the country representative of the United Nations Development Programme in The Gambia, was told to leave the country after she expressed doubts about the claims and said the remedy might encourage risky behaviour.
In August 2007, Jammeh claimed to have developed a single dose herbal infusion that could treat high blood pressure."
(Not just a tyrant, but a snake oil salesman, too...)