Scores of Russian spies are being expelled from capitals across the globe, as allies  stand in solidarity with Great Britain in an unprecedented show of support over the Salisbury nerve agent attack.

More than 100 Russian diplomats have been ejected from the United States and 22  other nations.

The US has announced the expulsion of 60 Russians, including including 12 intelligence officers from Russia's mission to UN headquarters in New York.

Trump's ambassador to the UN, Nikki Haley, welcomed the move and said: 'Here in New York, Russia uses the United Nations as a safe haven for dangerous activities within our own borders.'

Spokeswomen for the White House and the State Department, along with Haley and US ambassador to Moscow Jon Huntsman condemned the alleged Russian attack.

But Trump himself, who was expected to tweet on the subject, was silent.  

Germany, France and Poland each expelled four diplomats, with Lithuania, Latvia and the Czech Republic also taking action. Ukraine - not an EU state - joined the European revolt by expelling 13 diplomats.

Canada followed suit by expelling three Kremlin staffers and, in a flurry of action yesterday evening, both Hungary and Norway announced the expulsion of one diplomat respectively. Soon after Spain announced the expulsion of two.

Macedonia will also expel one Russian diplomat after consultation with 'our allies and partners, the EU and NATO', and in solidarity with Britain.

Malta also expressed support for the UK.

However, the island refrained from expelling diplomatic staff from Russia itself due to their 'very small' mission in Moscow. 

Australia also stood in solidarity with the UK, expelling two Russian diplomats this morning after waking the news of unilateral condemnation of Russia.

The extraordinary Western response is a major diplomatic coup for Theresa May, who has spent days warning allies that they could face similar Russian aggression if they stand by.

The Prime Minister said the united response showed Mr Putin's attempt to use the Salisbury attack to split the West had 'spectacularly backfired'.  

She told MPs: 'This is the largest collective expulsion of Russian intelligence officers in history.

'If the Kremlin's goal is to intimidate and divide the Western alliance then their efforts have spectacularly backfired.

'Today's actions by our allies clearly demonstrate that we all stand shoulder to shoulder in sending the strongest signal to the Kremlin that Russia cannot continue to flout international law and threaten our security.' 

She added the Government was 'dismantling the Russian espionage network' in the UK.

The Kremlin reacted in kind, threatening to 'respond to every country'. 

A statement from the Russian Foreign Ministry said: 'The provocative gesture of solidarity with London by these countries, who have bowed to the British authorities in the so-called Skripal affair and did not bother to understand the circumstances of what happened, is a continuation of the confrontational path to escalation.

'Britain's allies ... are blindly following the principle of Euro-Atlantic unity, to the detriment of common sense, the norms of civilized international dialogue, and the principles of international law.'

'It goes without saying that this unfriendly act by this group of countries will not go without notice and we will react to it.'