Muzaffarabad, Pakistan ? For the first time in 58 years, Indians legally walked into Pakistan on Saturday after a landmark decision to open divided Kashmir’s heavily militarized border. The temporary measure – aimed at reuniting families after the earthquake that devastated the region – may go a long way toward easing tensions between the two nuclear rivals.

The 23 Indians who crossed over hoped to visit relatives they have not seen since the frontier was drawn after the 1948 war between the neighboring countries, leaving most of Kashmir with India and a smaller part with Pakistan.

The region, claimed by both countries in its entirety, is at the core of the enmity between the two nuclear-armed rivals, who have fought three wars since independence from Britain in 1947.