Nuclear envoys from South Korea, the U.S. and Japan will meet in Tokyo later this week to discuss North Korea′s nuclear issues. The three countries on Friday are expected to discuss comprehensive ways to pressure Pyongyang and bring the regime back to the denuclearization talks. This comes as part of U.S. nuclear envoy Sydney Seiler′s three-nation trip to South Korea, China and Japan this week. Seiler, currently in Seoul, is reportedly holding talks with his counterpart Kim Gunn on ways to deal with Pyongyang′s nuclear provocations. The six-party denuclearization talks involving the two Koreas, the U.S., China, Japan and Russia have been stalled since 2008.