Myanmar’s military-backed rulers have shaved time off Aung San Suu Kyi’s prison sentence and freed thousands of detainees, but analysts say the apparent goodwill gestures tell a story of a regime growing bolder, not more merciful. The government last week announced an amnesty for 4,335 prisoners, its third in six months, and reduced by a sixth the 27-year sentence of the 80-year-old Nobel Peace Prize laureate Suu Kyi, who has not been seen in public since her criminal trials ended in December...