Vice President Joe Biden backed out from appearing with President Petro Poroshenko of Ukraine at a memorial ceremony in Kyiv on Friday, Nov. 21, when the Secret Service determined it "wasn't a good idea" after a crowd became "unruly," a pool report said.
POLITICO: Biden dodges angry mob in Ukraine
Ukrainian President Petro Poroshenko (L) welcomes US Vice President Joe Biden (R) prior to talks in Kyiv on Nov. 21, 2014.
