United States Vice President Joe Biden has warned Russia that it would face "greater isolation" if the country fails to agree to the September peace deal in Ukraine.
According to the BBC, Biden called on Russia to withdraw its military forces from Ukraine where he met President Petro Poroshenko.
On Friday, Ukraine formed a coalition government with a mission to overhaul the economy, fight corruption and pursue integration with the European Union.
Russia has been under constant pressure from Western government to withdraw army forces from eastern Ukraine.
Russian officials have been denying all allegations.
