Defence Secretary Gavin Williamson MP: "We should care about this, we should be bothered about nations are operating."
Russia should "go away and should shut up", the Defence Secretary said as Britain prepares for retaliation from Moscow over its response to the Salisbury attack.
Gavin Williamson was speaking in Bristol during his first keynote speech as Defence Secretary, and said:
"What we will do is we will look at how Russia responds to what we have done.
"It is absolutely atrocious and outrageous what Russia did in Salisbury. We have responded to that.
"Frankly, Russia should go away and should shut up."
Russian foreign minister Sergei Lavrov warned Moscow will expel British diplomats "soon" after the Prime Minister announced the biggest expulsion of Russian embassy staff since the Cold War.
Speaking during a visit to Salisbury, Theresa May said:
"We do hold Russia culpable for this brazen and despicable act that has taken place on the streets of what is such a remarkable city."
NATO secretary general Jens Stoltenberg said: "Russia has integrated conventional and nuclear warfare in its military doctrine and exercises.
"This blurring of the line between nuclear and conventional lowers the threshold for Russia's use of nuclear weapons.
"And the blurring of the line between peace, crisis, and war is destabilising and dangerous."
In Bristol, Mr Williamson also confirmed that £48 million is to be invested in a new Chemical Weapons Defence Centre, and that British troops will be offered vaccinations against anthrax.
He told Forces News' Laura Makin-Isherwood it shows the UK has a "world-leading" capability.