Since last Thursday, when Pakistani authorities blamed crossfire from a NATO helicopter for the deaths of 3 Pakistani soldiers, the convoy of non-lethal supplies for NATO and US troops in Afghanistan has been halted from using Pakistani highways. A parked convoy was attacked by gunmen early Monday morning and about 20 oil tankers were set ablaze – 5 people were wounded and 3 were killed. This is the 3rd attack on the supply convoy since Friday. While there are alternative routes into Afghanistan, going through Pakistan is the cheapest and most convenient. Pakistan’s US ambassador said the route would probably re-open in “less than a week,” according to CNN.