All the participants had known the goal and principles of the six-party talks clearly, so the most important thing was that all sides should have a common understanding of "denuclearization" andfind out concrete measures to resolve the issue, said Alexeyev, also Russian deputy foreign minister.

"We have has a good foundation, that is, the fruits that we have achieved in the former three round of the talks," he said at the opening ceremony of the fourth round of the six-party talks.

The declaration that the DPRK and the Republic of Korea (ROK) made in 1992 was also part of the good foundation, he said.

The talks on the Korean Peninsula nuclear issue involves the six nations of China, the Democratic People's Republic of Korea (DPRK), the United States, the ROK, Russia and Japan.

The Russian deputy foreign minister said he hoped that with progress was made during the talks, the relevant sides could normalize their relations in diplomatic, political, economic and social fields.

"Under this circumstances, Russia welcomes the intention to solve bilateral concerns within the framework of the six-party talks," Alexeyev said.

Russia adheres to a nuclear-weapon-free Korean Peninsula, he said.

The "package solution" to the nuclear issue that Russia had proposed had not lost its feasibility, he said, adding that Russiawas willing to revise it if necessary.

Russia has proposed a package solution to the issue, that is, to create a nuclear-free Korean Peninsula and provide security guarantee for every country in the region, including the DPRK.

The only feasible way to resolve the issue is to hold diplomatic talks in accordance with the spirit of mutual respect, mutual understanding and equality, and take the concerns of all sides into consideration, he said.