Mr. Hun Sen (right) and Sam Rainsy (left) in 2008 (Photo: Phnom Penh Post)

(VOVworld)- Cambodia’s long-ruling Prime Minister, Hun Sen, briefly met the head of main opposition party for the first time in years on Saturday, but the two rivals reached no agreement on how to end the political stalemate that has simmered since the country's disputed election. The opposition says it would have won had the vote been fair and has vowed to stage a new wave of protests Sunday and boycott parliament's first session on 23 September unless an independent committee investigates its claims of widespread voting irregularities. The government has rejected the demands. Saturday's meeting between Hun Sen and the opposition leader, Sam Rainsy, was called by King Norodom Sihamoni, and was held at the royal palace in the capital, Phnom Penh.