Cambodia's Hun Sen has been in power since 1985

The Prime Minister of Cambodia is visiting the 2018 UN General Assembly in NYC and Cambodian Americans rally on both sides outside of the UN Headquarters. Hun Sen is credited with helping achieve economic growth and peace after the devastation caused by the Khmer Rouge regime, responsible for one of the worst mass killings of the 20th century. But the prime minister, 65, is also seen as an authoritarian figure with a poor human rights record and the resources to thwart any real political challenge. He shows no signs of wanting to relinquish power - in June 2018, he vowed to rule for 10 more years. His ruling Cambodian People's Party (CPP) has dominated Cambodia for decades, but has faced competitive elections. The party went into the July 2018 elections facing no significant rivals after the main opposition - the Cambodia National Rescue Party - was dissolved.