President Obama spoke today with Ukrainian President Petro Poroshenko about the conflict in eastern Ukraine and the upcoming discussions about Ukraine at the G-7 Summit. The President and President Poroshenko expressed their deep concern about the recent assault by combined Russian-separatist forces across the current line of contact near Donetsk, Ukraine, and once more called on Russia and the separatists it backs to abide strictly by the terms of the February Minsk Implementation Plan. The President reaffirmed the strong support of the United States for Ukraine’s sovereignty and territorial integrity, and reiterated his determination to continue working with international partners to provide the support Ukraine needs as it undertakes transformational reforms. The President also underscored the commitment of the United States to supporting a diplomatic resolution to the conflict in eastern Ukraine and the need to maintain costs on Russia and the separatists until they fulfill all provisions of the Minsk agreements.