@ politics @N+ Putin's inhumanity sharpens Biden's historic dilemma Analysis by Stephen Collinson, CNN Updated 12.18 AM ET, Tue March 15, 2022 alc Lniotycigy Eottictolunanchodt RYM; Ulri? BREAKING NEWS HEAV *ploSioNS HeARD AcaOSS KYV AS RuSSIA EXPAHDS IS HSSAULT Haaeee Heavy exploslons heard across Kylv as Russla expands Its assault on Ukralne wlthln 12 mlles Of Pollsh border 05.48 (CNN) President Joe Biden's choices and challenges on Ukraine were already extremely tough: As the war's horror mounts, they are about to get even more excruciating: Since Russia launched its onslaught last month, Biden has sought to punish and isolate President Vladimir Putin and to mitigate the slaughter of civilians by providing defensive weapons to the Kyiv government: But he's also calibrated his actions to avoid being dragged into a dangerous direct conflict with nuclear-armed Russia while finessing his own delicate political situation at home