Russian Federation has ordered the expulsion of 23 British diplomats in Moscow as the diplomatic crisis between the two countries deepens.
Putin's re-election comes amid rising tension with the West, particularly with the United Kingdom, which last week accused Russian Federation of using a nerve agent to poison a former spy and his daughter living in England.
British Prime Minister Theresa May said last Monday that it is "highly likely" that Russian Federation was behind the attack in conclusion that came after tests carried out at the Porton Down military facilities.
The Foreign Ministry said Moscow's measures were a response to what it called Britain's "provocative actions and unsubstantiated accusations".
"London is ready to provide Moscow with access to the Skripal and Glushkov cases", the British Foreign Secretary said.
Britain's Foreign Ministry said it had anticipated Russia's response and that its priority was to look after its staff in Russian Federation and assist those returning home. As well as expulsions, Moscow's also added the closure of the British Council Cultural Centre in Russian Federation and an end to plans for the reopening of a Consulate in St Petersburg.
Putin's re-election was widely expected, and elections officials had pushed hard for a strong turnout to claim an indisputable mandate.
British Ambassador Laurie Bristow, who was summoned the Foreign Ministry in Moscow today to be informed of the moves, said the poisoning was an attack on "the worldwide rules-based system on which all countries, including Russian Federation, depend for their safety and security".
USA government had supported British decision of expulsion of 23 Russian diplomats.
"We will never tolerate a threat to the life of British citizens and others on British soil from the Russian government", the Conservative leader added, eliciting applause.
"It is our view that when political or diplomatic relations become hard, cultural relations and educational opportunities are vital to maintain on-going dialogue between people and institutions", it said.
"In light of Russia's previous behaviour, we anticipated a response of this kind and the National Security Council will meet early next week to consider next steps".
A row with Britain over allegations the Kremlin used a nerve toxin to poison a Russian double agent in a sleepy English town, denied by Moscow, has not dented his standing.
Speaking on Russia-24 television, Zakharova today linked Britain's angry reaction to the war in Syria.
New tensions have also surfaced over the death Monday of a London-based Russian businessman, Nikolai Glushkov.
U.S. President Donald Trump, German Chancellor Angela Merkel and French President Emmanuel Macron later backed the U.K.in a joint statement with May and said there's "no plausible alternative explanation" to Russian responsibility.