What on earth do you mean the 1922 mandate is "still extant"? Just because the mandate document still exists and you can read it? Britain gave up the mandate in 1947, and turned over to the UN the problem of what should be done with Palestine. The mandate has had no legal validity since 1947. As for codes and laws defining Jewish settlements in the West Bank as illegal, try reading UN Security Council resolutions and the 4th Geneva Convention. Or does your legal reading not extend to international law?
U.S., allies conduct 1 air strike in Syria and 11 in Iraq against ISIS militants (Reuters)