The bills are a pet project of nationalist Prime Minister Shinzo Abe, who says Japan can no longer shy away from its responsibility to help safeguard regional stability, and must step out from under the shade of the security umbrella provided by the United States.
The draft legislation, which will go before lawmakers in the coming months, formalises a decision made by the cabinet last year to broaden the remit of Japan's well-equipped and well-trained armed forces.
"Protecting the peace and lives of its people is a country's most important responsibility," Chief Cabinet Secretary Yoshihide Suga told reporters.
"The security situation surrounding our country is extremely tense. So as to ensure peace and stability, we need to strengthen the Japan-US alliance and to enhance trust and cooperation among partners in the region.
"It is important to be ready for any eventuality. The purpose of the bills is to strengthen the deterrent and prevent conflict from happening."
