it has been enough to get joe biden's attention. the u.s. president contacted the ukrainian premier leader. >> it is pictures like this that has got the government in p.m. concerned. -- in kiev concerned. kiev is accusing russia of expanding its military presence in the separatist control regions, as well as the border with crimea to the south. on thursday, ukraine's foreign minister called on moscow "to immediately and unconditionally reaffirm its commitment to political and diplomatic settlement and a cease-fire regime." president joe biden has spoken with the ukrainian leader. the white house says he affirmed the u.s.'s unwavering support for ukraine's sovereignty in the face of russia's ongoing aggression. >> we discussed the situation in detail. president biden assured us ukraine will never be left alone against russia's progression. andrew: russia's foreign minister says -- with the nato defense alliance saying it is concerned about a russian buildup, moscow says the real threat is nato sending troops to ukraine. >> undoubtedly, such a

that story later in the program. ♪ as president joe biden has described the gun violence as a stain on the country. this comes in the wake of the latest mass shooting in which eight fedex workers died. the gunman was later identified as a 19-year-old former employee. [siren wailing] reporter: another corner of america the scene of yet another mass shooting, this time at a fedex facility in indianapolis. a gunman, opening fire late thursday night, killing workers outside the car park, before going inside to kill others, and that himself by friday morning. , police were. still trying to piece together the motives of the gunman details remain scarce. >> he got out of his car and pretty quickly started some random shooting outside of the facility. there was a confrontation with anyone that was there, no disturbance, no argument, he just appeared to randomly start shooting and that begun in the parking not. and then he did go into the facility for a brief period of time. reporter: overnight, workers' families gathered and waited too. united with relatives on shift. compounding the anguish,

president joe biden has called on global leaders. he laid out how the u.s. will achieve the target of cutting carbon emissions and half by 2030 which he announced on thursday. he invited advisors and business leaders to flesh out what he believes is a valuable economic opportunity of tackling the crisis while creating new jobs. among them was bill gates who urged leaders to work together. >> we need to develop and deploy through technologies that allow us to eliminate emissions throughout the physical economy. we need to tap the power of markets to deploy these innovations back finding creative ways to finance technologies and by leveling the playing field so they can compete with fossil fuels. third, governments and corporations need to adopt policies that will make it faster and cheaper to meet the transition and leaders will need to reward those who take difficult steps. >> other stories are following u.s. -- construction of a pipeline in memphis. some have called the proposed project a case of environmental racism. our reporter joins us from memphis, ten