Tensions have cooled between India and Pakistan since February, when Pakistani jihadists bombed an Indian paramilitary convoy in Kashmir and killed at least 40 Indian soldiers. Retaliatory airstrikes ended after Pakistan shot down and captured an Indian pilot, and his release this month has headed off escalation between the two nuclear powers—at least for a while.

The global focus now shifts to rooting out terrorists in Pakistan, but China is already easing international pressure on Islamabad to do so. On Wednesday Beijing...