AP Photo

North Korea has just tested its third nuclear device, of a more advanced variety than the ones in 2006 and 2009. The blast was greeted with resignation and hand-wringing. There was, however, more hoo-ha in some quarters over the latest suspected Iranian advances in nuclear technology. It’s always thus with Iran — it is thought to have done this or that with its nuclear program, which it says is for peaceful purposes but which we know is not. Kim Jong Un is irrational, yes, but the ayatollahs may be far more dangerous.