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. look, i have no intention of meeting with him, but if he came to me at the g20 and said i want to talk about the release of griner, i would meet with him, probably. it depends. he s acted brutally, he s committed war crimes. i don t see any rational to meet with him. good morning to viewers in the u.s. and around the world. i m brianna keilar here with john berman. president biden is also sending the russian leader a chilling warning. follow through with your threat to use a tactical nuclear weapon against ukraine and it could end in armageddon. biden said that putin totally miscalculated by invading ukraine but he believes the russian president is a rational actor. jake tapper asked president biden what a u.s. response might look like if putin deploys a nuclear arsenal. there have been discussions on that, but i m not going to get into that. it would be irresponsible for me to talk about what we would or wouldn t do. have you asked the pentagon to game it out ....
Stretches about 6,000 miles long. that s kind of the point of impact, that s the trail. check out this other image that nasa released yesterday at the briefing. this was taken by the small satellite that was trailing, spying on the dart spacecraft and that s the moment of impact. it s interesting that what nasa wants to study are the plumes of dust that come out from the moment of impact. what s next? that s the big question here. what nasa has done is proven this type of technology could work if there were ever a big earth killing asteroid potentially headed our way. this was not. the key is you have to detect it years in advance. far in advance so you can send a spacecraft like dart, hit it and push it 4% off its current orbit so that ultimately you can move its trajectory by a larger margin and hopefully save the planet, all of us. ....
Our risk of heart disease? medication is important and so is your behavior. exercise, mental health, sleep, watching your diet and what you re eating. all of these things matter in addition to what drugs we give you. there s less debate in the population of people who had an event, a heart attack or stroke. there was a recent stud dy that showed the polypill decreased an event by 25%. interesting stuff. thank you very much. so a watershed moment for nasa. the space agency successfully changing the trajectory of an ast asteroid. also this idea and the question continues to pop up on whether or not i would run for president, would i seriously consider it? and i have seriously considered it. president the rock or maybe ....
Prefer diane keaton. to avoid armageddon nasa announcing the spacecraft pushed an asteroid out of orbit after a deliberate crash last month. the goal was to see if slamming into the asteroid could change its course just in case a bigger asteroid one day threatens earth. now this is a watershed moment for planetary defense. and a watershed moment for humanity. let s bring in cnn space and defense correspondent kristen fisher. it took a while to figure out exactly what happened here. is it worth it? is the payoff there? reporter: you and i have been talking about this for weeks. what we learned yesterday was this mission was more successful than nasa expected. we knew the dart spacecraft had successfully hit this asteroid a little over two weeks ago. what we did not know is if nasa ....