Tuesday, Feb. 9, Tehran followed through on its leaders’ promise to start home-processing of uranium up to 20 percent grade, in open defiance of a UN ban.  Adding insult to injury, UN inspectors were invited to Natanz to witness the event, which was charged with echoes of the threat sounded by Iran’s spiritual ruler Ayatollah Ali Khamenei the day before:  “The Iranian nation with its unity and God’s grace will punch the arrogance [of Western powers] on the 22nd of Bahman (Feb. 11) in a way that will leave them stunned!”