Moscow severely criticised Friday the adoption of a bill in the US Congress aimed at providing lethal and non-lethal aid to Ukraine and imposing additional sanctions against Russia.
The Ukraine Freedom Support Act approved Thursday by both houses of the US Congress causes nothing but deep regret due to its "openly confrontational nature", Xinhua quoted Russian Foreign Ministry spokesman Alexander Lukashevich as saying in a statement.
"The US lawmakers, following the steps of the Barack Obama administration, are doing their utmost to destroy the carcass of cooperation (between the two countries)," Lukashevich said.
"It's about time the US congressmen abandon illusions about the effectiveness of their sanctions campaign against Russia. We will not give in to blackmail, we will not forsake our national interests, and we will not allow any interference in our internal affairs," RIA Novosti news agency quoted Lukashevich as saying.
According to the US Senate Committee on Foreign Relations, a legislation was passed unanimously Thursday by the Senate, granting lethal military and non-military assistance and expanding sanctions against Russia.
The Act would also provide Ukraine with energy, defence sector, and civil society assistance, and expand broadcasting programmes to counter Russian propaganda in countries of the former Soviet Union, according to an online announcement posted by the committee.
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Also on Friday, Russian foreign ministry disproved the accusations of Russia violating Washington's the Intermediate Nuclear Forces (INF) treaty.
US Under Secretary of State for arms control and international security Rose Gottemoeller said Thursday the US was considering taking economic measures against Moscow in response to Russia's alleged violation of the treaty.
Relationship between Russia and the US has worsened to an ice point due to the over nine-month armed conflict in Ukraine between Kiev government and the independence-seeking insurgents in the eastern regions of Donetsk and Lugansk.