suck -- they have to deal with a north korea that appears more concerned with testing weapons than talking. neither candidate has foreign policy experience. lee supports the sort of engagement current president moon jae-in has sought with minimal success. >> translator: we need dialogue as well as sanctions. we need incentives as well as disincentives. the most important thing is to secure trust. >> reporter: yoon believes sanctions should be eased only after denuclearization is complete. >> north korea has only improved their nuclear capabilities and disregarded inter-korean dialogue. i will prepare a peace treaty only when and if north korea moves towards complete and verifiable denuclearization. >> reporter: for years, south korea has been walk ago i tight rope of a strong security alliance with the united states and a growing economic relationship with china. the next president may feel more pressure to choose.