number of u.s. troops now already on the ground in baghdad. they re trying to learn if iraq s military can withstand the insurgent onslaught as the militants take aim as an extraordinary new target. and grilling donald sterling. his clients have included the beatles, michael jackson, tom cruise, and john travolta. and now the legendary lawyer burt fields will cross-examine the clippers owner and join us to talk about that can this hour. i m wolf blitzer. you re in the situation room. he s the man in the hot seat of a house republican investigation, but as yet to break a sweat. the irs commissioner john cos kanaan is no stranger to washington and now finds himself at the center of the scandal over the agency s targeting of conservative groups. john kaskey nen will join us but