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Headline this sunday? >> well, there is seems to be right now a little glass half full situation that things haven't escalated any more out of ukraine, that there is an off-ramp that the president has tried to provide vladimir putin, that basically say, look, let's bring monoders into crimea, make sure everything's okay, we have elections coming up in may. it seems now things have de-escala de-escalated. we'll see if things start to ramp. >> mark murray, we'll see you on monday, mark, thank you. >> thanks, tamron. right now, a group of rutgers faculty and students are trying to oust condolee...

To him, if he screams and he's really anxious, he sounds like a woman. >> that is not true. he sounds like a man. i've seen him be very anxious. >> and he would shout? >> at myself. >> reporter: now why that is so important is because the defense has been trying to rattle holes in the accounts of some of the witnesses in which they say they hear clear screaming, distinct yelling between a man and a woman. the defense has been trying to challenge those testimonies by alleging or saying that they can't distinguish between the sound of a man screaming and the sound of a woman, and that's what you...

Pistorius was trying. that's when i said not everything is in order as mr. pistorius was telling me. i saw mr. pistorius coming down to reeva. my lady, i was so shocked that i couldn't even think for a few moments. >> it was an emotionally charged week, no doubt about it, based on some of these testimonies, but next week, the prosecution really wants to put home their strongest case and that is going to rely very strongly on forensics and evidence. tamron? >> ayman mohyeldin live for us in pretoria. thank you, ayman. is there new hope for hiv patients? doctors are expected to test drugs on i...