India’s missile and bomb strikes on targets in Pakistan and Pakistani-controlled Kashmir have prompted multiple attacks in retaliation between the nuclear-armed neighbors to the point that some are now calling it a de facto war.

The truce came after several days of the countries’ most expansive fighting in decades. One Indian official said the country would “deal strongly” with any violations.

India launched multiple Israeli-made Harop drones targeting Pakistan overnight and into Thursday, with one damaging a military site and wounding four soldiers, a Pakistani army spokesman said.