Nearly 80 percent of respondents in Japan were negative about the prospects for a complete denuclearization of the Korean Peninsula despite last week's historic summit between U.S. President Donald Trump and North Korean leader Kim Jong Un, the latest Kyodo News poll showed Sunday.

The poll, conducted by telephone Saturday and Sunday across the nation, showed that 77.6 percent do not think the Korean Peninsula will be denuclearized and only 16.4 percent think it will.

On Tuesday, Kim pledged to work toward the "complete" denuclearization of the peninsula, while Trump committed to provide security guarantees to Pyongyang. But the two did not mention a timeline on the process.