debra patta,onrn news will be right back. >>> this weekend's u.s.is championship may best be remembered for the serena williams controversy. but it was naomi osaka who won and it came on the 50th anniversary of an historic u.s. open. when arthur ashe became the first african-american champion. ashe who died in 1993 may not have gotten that chance if not for his brother's sacrifice. here's james brown. >> reporter: vietnam was an ugly war. >> reporter: in 1967 johnny ashe was a marine fighting in the jungles of vietnam while his older brother arthur was in the army stationed at westpoint. in may they wrote to each other. >> i had said to him in the letter, you know, i got only a couple months left. how much time you got left? he said, well, i'll have 15 months left when you get back home. so i started thinking about it. >> reporter: he was thinking about protecting his brother from combat. given the military's desire to avoid deploying siblings to a war zone at the same time. >> i went to the first sergeant and said, look, i want to extend my tour in

debra patta is just across the border tonight in turkey. >> >> reporter: it took just 15 minutes for russia to unleash its military might this morning. during that brief time, 17 airstrikes rained down. among the dead, an infant girl. russia has been fixing its military muscle with renewed intensity after a turkish and russian summit failed to agree on a cease-fire. syria, backed by its allies, has been gearing up for an assault. lis.w ere arly 3illionhat they half of them have already fled from syria. there's nowhere left to go. and so they frantically prepare for war stocking up on supplies and handing out makeshift gas masks. the united nations has warned of a humanitarian disaster and wants to set up corridors while turkey is concerned about a new influx of refugees, which they have no capacity to deal with. so for now, they have closed the borders here and have also sent in military reenforcements to the area. >> a dire situation, thank you. the cbs overnight news will be right back. what's the #1 new skincare product in 2018? olay whips. absorbs faster than the $100, $200, and