WASHINGTON, March 4. /TASS/. US Senator (R-South Carolina) Lindsay Graham’s calls for the assassination of the Russian President Vladimir Putin are unacceptable and outrageous, the embassy demands official explanations from Washington, Russia’s Ambassador to the US Anatoly Antonov said on Friday.

"It becomes scary for the US fate, which is run by such irresponsible and unprofessional politicians. We demand official explanations and a strong condemnation of the criminal statements of this American," the Russian envoy wrote on Facebook.

"I find the statement of the American politician to be unacceptable and outrageous. The degree of Russophobia and hatred in the United States towards Russia is off the scale. It is impossible to believe that a senator of a country that promotes its moral values as a "guiding star" for all mankind could afford to call for terrorism as a way to achieve Washington's goals in the international arena," Antonov noted.

The US Senator Lindsay Graham published his call for the assassination of the Russian leader on his Twitter account on Friday.