Pakistan has arrested the long-time leader of a militant group that India accuses of carrying out the December 13th attack on the Indian parliament. India has called the Pakistani action "a step forward." But the standoff between the two nations is far from over. Thousands of troops from both nations are massed along the border. And today three Indian soldiers and at least nine militants were killed in the disputed region of Kashmir. NPR's Eric Weiner reports from Islamabad, Pakistan.