Japanese Prime Minister Shinzo Abe on Wednesday unveiled a plan to seek a first-ever change to the postwar Constitution, bidding to see the revision take effect in 2020, a specific time frame not publicly mentioned before.In a video message to a gathering marking the 70th anniversary of the charter's coming into force, Abe, who is also head of the ruling Liberal Democratic Party, proposed making explicit the existence of the Self-Defense Forces in the language of the war-renouncing Constitution, which currently makes no mention of it.Abe's remarks are likely to draw sharp responses from opp…READ FULL ARTICLE