South Korean President Lee Myung-bak said Tuesday that an inter-Korean summit is possible, if necessary, when the Democratic People's Republic of Korea (DPRK) shows sincerity toward dialogue.

"Whether it's the six-party talks or an inter-Korean summit, the most important thing is the DPRK's sincere attitude," Lee said in a televised discussion program on the eve of the Lunar New Year's holidays.

"If the DPRK seeks sincere dialogue, rather than military provocations, we can have dialogue, and resume economic exchanges and the six-way talks," Lee stressed.

Lee also said that the DPRK has a "good" chance to prove that it's willing to change its attitude. "I believe this is a good opportunity for the DPRK, that it is engaging in dialogue with the South at this point."

The two sides have agreed to hold a preliminary meeting to prepare for higher-level military talks aimed at easing tensions on the peninsula, though they haven't set a date for the meetings.