A fresh round of sanctions were imposed on Moscow Saturday by the United States over the 2018 poisoning of former double-agent Sergei Skripal in the United Kingdom. 

Russian agents have been blamed for the poisoning of Skripal and his daughter in the English city of Salisbury in March last year using the Soviet-developed nerve agent Novichok.  

Washington said Saturday it will oppose "the extension of any loan or financial or technical assistance to Russia" by international financial institutions and put limits on U.S. banks from financing Russian sovereign debt, U.S. State Department spokeswoman Morgan Ortagus said in a statement.  

The U.S. will also limit the export of goods and technology to Russia, Ortagus added. 

The Salisbury attack, the first offensive use of chemical weapons in Europe since World War II, caused an international outcry and prompted a mass expulsion of Russian diplomats by Western nations.  

Moscow denies involvement in the poisoning and has offered numerous and varied alternative explanations and counter-accusations.  

Russia's Ministry of Foreign Affairs said on Friday that the U.S. move to impose another round of sanctions on Moscow hurt ties and was regrettable. 

"I think that this is primarily connected to U.S. domestic politics," Deputy Foreign Minister Sergei Ryabkov told the RT TV channel. 

Ryabkov said he regretted that U.S.-Russia ties, already strained by differences over everything from Syria to Ukraine, had become a political football in the United States. 

Skripal, a former officer with Russia's GRU military intelligence agency, was found guilty in 2006 of "high treason" before being traded in a spy exchange between Moscow, London and Washington.  

In January the European Union imposed chemical weapons sanctions on nine Russian and Syrian officials, including the chief of the GRU.