If the militia of Donbass will try to take Mariupol, it could have "catastrophic consequences" for efforts to achieve a diplomatic solution to the conflict in Ukraine, said the head of the OSCE parliamentary Assembly Ilkka Kanerva. Deputy head of the special monitoring mission of OSCE in Ukraine Alexander hug said that "the use of any weapon, and any deployment of heavy machinery in a prohibited areas constitutes a violation of the agreements signed in Minsk, reports" news Agency ". last week in a special OSCE monitoring mission in Ukraine told that the participation of heavy weapons in the parade on 9 may in the Donetsk and Lugansk people's republics will be the failures of the Minsk agreements.