“Some of the information I have is in a classified setting, so I can’t reveal it, but I am convinced that Russia has been violating the agreements,” Senator Cardin said, referring to US evidence of alleged ceasefire violations used to justify Washington's most recent sanctions against Russia.
While the details of the alleged violations have not been opened to the general public, Cardin asserted that “there has been information made available through the proper channels to Russia.”
“[Russia is] aware of what we base our information on,” he added.
On Wednesday, the US Treasury announced a new round of sanctions, aimed at fourteen individuals and two entities in Russia and eastern Ukraine’s breakaway republics. The Treasury stated in their press release that the sanctions were a direct response to alleged violations by "Russian-armed separatists" in the conflict in Debaltseve and Mariupol, two contested cities in the conflict between Kiev and the Donbas republics.
Senator Cardin noted that the White House has taken the approach of “layering sanctions,” warning Russia in recent weeks that the United States would impose further economic measures if the Minsk agreement was not fully implemented.