by Claire Bigg, Radio Free Europe, Czech Republic - Just over one year after President Vladimir Putin handed him the Chechen leadership, Ramzan Kadyrov has taken innumerable steps to tighten his grip over the war-battered republic. But the recent standoff between his forces and a rival pro-Kremlin clan underscores the volatile situation in Chechnya as it rebuilds from more than a decade of war against separatist rebels.