Tell me about it. Whilst this news isnt great, why the hel* would we want to invade Iran. The Iran border region is infested with smugglers (who on several occasions have attacked and killed Iranian border guards). In turn Pakistan to be honest has not done much, and that is completely understandable given that our limited resources have to be spent on the large threat on our eastern and Afghanistan borders. In our books the Iranian border takes a lower priority, but the same doesnt hold true for them of course.
Having said that our border forces need to communicate more with each other, to avoid friendly fire.