KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency

KIEV, UKRAINE - APRIL 18: Protestors gather with their cars in front of the Cabinet of Ministers during all-Ukrainian protest rally against increasing fuel price in Kiev, Ukraine on April 18, 2018. Protesters gathered to prevent a possible rise in prices for gasoline and diesel fuel. Vladimir Shtanko / Anadolu Agency