Ukrainian President Petro Poroshenko has accused Russia and the Moscow-backed separatists in eastern Ukraine of abandoning the peace accords agreed in September, dpa reported. In a telephone call with German Chancellor Angela Merkel late Tuesday Poroshenko said a recent inflow of troops and heavy weapons was evidence of this. "The representatives of the so-called Luhansk and Donetsk People's Republics have practically rejected implementing the Minsk agreements, while there is no progress in Russia's implementation," Poroshenko told Merkel according to his office. Merkel said the conflict in Ukraine will be a main issue at the G20 summit this weekend in Australia.