Aun Pheap is facing charges related to reporting before June 2017 local elections, as is his Canadian reporting partner.
While the political relationship between Cambodia and China continues to grow in strength, signs of tensions have begun to show as fears over criminal activity circulate.
The CNRP was dissolved and its lawmakers banned from politics in November after the Supreme Court ruled that it had tried to overthrow the government.
Though born in Hawaii, raised in Indonesia, and educated in New York City, former President Barack Obama has adopted city of Chicago as his hometown. VOA Khmer's Sreng Leakhena narrates.
Aun Pheap, 54, now in the United States, was charged in August last year along with a colleague, Zsombor Peter, a Canadian, after an interview with former opposition members.
The Cambodian Senate has long been seen as a rubber stamp body with the balance of power falling with the ruling party and its cronies.
More than 1,000 Chinese nationals have been arrested and deported from Cambodia since 2012 relating to online scams being run out of Cambodia.
The blossoming friendship between China and the Cambodian government has become so close that a Chinese majority-owned, Khmer Language television station has built studios directly inside the Ministry of Interior in Phnom Penh.
David Chandler saw positive changes in terms of liberalization and democratization when he was concluding the current version of the book, which was last revised in 2007, but in the past decade Cambodia has taken backward steps, he said.
Sam Rainsy added that Japan had strong leverage over Cambodia due to its considerable development assistance and investment.
Hun Sen ordered those involved in the plot arrested and for the police to step up security in the capital.