intention to create a new Constitution for a new era."

Collective defense, an activity prohibited under the government's interpretation of the Constitution, is also an issue that needs to be studied further, he added.

Abe stressed his hope that the ruling coalition suffers no setbacks in the summer Upper House poll. At present, the governing Liberal Democratic Party lacks a majority, holding only 111 out of the 242 seats in the chamber. It has managed to maintain a majority by its partnership with New Komeito, which has 24 seats.

Critics, however, have pointed out the possibility that the LDP will struggle and may even be stung in the July election.