Vladimir Putin berated the US this weekend in terms that echoed the Cold War. Is the New Russia looking more like the old?  We look at Kremlin takeovers of energy and the  media.  What about the imprisonment and mysterious killings of business rivals and political critics?   Plus, Iran denies US charges that it armed Shiite groups in Iraq with armor-piercing weaponry.  On Reporter's Notebook, the Dixie Chicks and the politics of pop music.