It's OK <a href=" http://accesstocompletion.com/what-is-methotrexate.pdf ">methotrexate radioactive</a> PERSONALITIES: Hun Sen has been prime minister for 28 years. He was with the Khmer Rouge before defecting, and in 1985 was installed as prime minister by Vietnam, which had occupied Cambodia. With a reputation for cunning and ruthlessness, he insisted on being named co-prime minister despite his party losing the 1993 election, then ousted his partner in government in a 1997 coup.