When U.S. Secretary of State Condoleezza Rice visits next week, Japan will tell Washington that it should continue using its terrorist-sponsor designation for North Korea as leverage against Pyongyang, Foreign Minister Masahiko Komura said Friday.

"The U.S. is now ready to use delisting (the North) as a negotiating tool for denuclearizing North Korea. That is the leverage the U.S. has (against the North)," Komura told reporters Friday.

"We are now asking the U.S. to let us use this leverage more. There is not enough (pressure) yet."