political conditions escalate as secretary of state and john mccann butt heads. >> plus guilty of murder with a five inch heel. >> bill clinton calls edward snowden an imperfect messenger. >> and uconn wins both big ones. >> thanks for joining us. we have break news overnight in the search for flight 370. two more pings detected underwater 33 days after the airline vanished. they're optimistic the plane's wreckage will soon be found. >> i believe we are searching in the right area but we need to visually identify aircraft wreckage before we can confirm with certainty that this is the final resting place of mh 370. let's get right to nbc's ian williams live in perth, australia. how cautious is this sense of optimism. >> good morning to you, betty. they are increasingly confident that they're looking in the right area but there are enormous challenges still to trying to find and recover any black box and aircraft wreckage that might be lying on the ocean floor which is almost three miles deep at that point. now, detecting these two bursts of sounds tuesday which they're convinced are man m

political conditions escalate as secretary of state and john mccann butt heads. >> plus guilty of murderive inch heel. >> bill clinton calls edward snowden an imperfect messenger. >> and uconn wins