Japan's security bills: Key questions about its impact on Japanese society

Japan’s parliament has approved legislation that will expand the role of its highly restricted military, opening up the possibility that it could fight abroad for the first time since the second world war.
Advocates say the measure, passed on Saturday after days of tortuous debate, is vital to ensure Japan can respond to threats from an increasingly belligerent China and unstable North Korea. Opponents argue it will fundamentally alter the country’s pacifist character.
Key ally the United States and some Southeast Asian countries have welcomed the move, but China accused Japan of threatening regional peace and said it had failed to learn “profound lessons from history”.
The legislation has been something of a pet project for nationalist Prime Minister Shinzo Abe, but has been highly controversial in Japan, and has cost him a lot of public support.
Analysts say the deep unpopularity, and looming legal challenges, could effectively put the reforms on ice.
Here are some key questions and answers about the legislation and its potential impact on Japanese society: