FILE PHOTO: Cambodia's Prime Minister Hun Sen attends a celebrations marking the 66th anniversary of the country's independence from France, in central Phnom Penh, Cambodia, November 9, 2019. REUTERS/Samrang Pring/File Photo

PHNOM PENH: Cambodia's authoritarian leader Hun Sen has offered to renew friendship with the United States after receiving a letter from President Donald Trump, a turnaround in relations with the country he once accused of conspiring to overthrow him.