From the New York Times, January 17/18:
The exchange of attacks came as the upheaval sweeping the Middle East threatened to expand.
In an expansion of hostilities rippling through the region as the Israel-Hamas war rages on, Pakistan said on Thursday that it had carried out strikes inside Iran, a day after Iranian forces attacked what they said were militant camps in Pakistan.
The Pakistani Foreign Affairs Ministry said that the country’s forces had conducted “precision military strikes” against what it called terrorist hide-outs in southeastern Iran. The Iranian state-owned television network Press TV said that seven foreigners were killed in the strikes.
A senior Pakistani security official, speaking on the condition of anonymity, said Pakistan had struck at least seven locations used by separatists from the Baluch ethnic group about 30 miles inside the border. The official said that air force fighter jets and drones were used in the Pakistani retaliatory strikes.
Pakistan and Iran Exchange Military Strikes...
....MUCH MORE
January 16: "Shia Iran Missile Attack On Sunni Pakistan"