March 11, 2015
Vice President Joe Biden spoke today with Ukrainian President Petro Poroshenko regarding the situation in the east, additional non-lethal U.S. security assistance to Ukraine, and new sanctions on Russian-backed separatists and their supporters. The Vice President noted with concern the ongoing violations of the ceasefire by Russia-backed separatists near Donetsk and Mariupol and their refusal to allow OSCE monitors unfettered access to the territory they occupy.
Joseph R. Biden, Readout of the Vice President's Call with Ukrainian President Petro Poroshenko Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/309987