Russian top negotiator Alexander Losyukov said in Beijing on Wednesday he is "cautiously optimistic" about the upcoming second session of the sixth round of the six-party talks on the Korean Peninsula nuclear issue.

"There may erupt some problems and difficulties, but all the six parties will make joint efforts to address them," Losyukov told reporters at the airport upon his arrival in Beijing Wednesday morning.

Losyukov is the second of the foreign delegates to arrive here for the upcoming phase of the six-party talks. Kim Kye-Gwan, top negotiator of North Korea, arrived in Beijing one day earlier.

The second phase of the sixth round of the six-party talks on the Korean Peninsula nuclear issue is scheduled to run from September 27 to 30.

The six-party talks, initiated in 2003, involved China, North and South Korea, the US, Russia and Japan.

In a session of the six-party talks held in July, envoys agreed to meet in Beijing in September to hear working group reports and work out a road map for the implementation of the general consensus reached in July.

(Xinhua News Agency September 26, 2007)