"In response to a cynical chemical attack in Salisbury (UK), Ukraine, in a spirit of solidarity with our British partners and transatlantic allies, as well as in coordination with EU countries, decided to expel 13 of the remaining few Russian diplomats from the Ukrainian territory," the president's press office quoted Petro Poroshenko as saying, Censor.NET reports.
"As it is known, our diplomatic relations with the Russian Federation are de facto frozen. Russia once again confirmed its dismissive attitude not only to the sovereignty of independent states, but also to the value of human life. Ukraine feels it every day in the occupied Ukrainian Crimea and Donbas.
"Therefore, it is important as never before not to be limited to symbolic gestures. The next step is to increase the price for international crimes of Moscow, inter alia, through the increase of personal, financial and economic sanctions.
"Our joint response to the Kremlin will continue to be decisive and rigorous in order to prevent new human tragedies and ensure respect for international law," Ukraine's president said in a statement.