President Donald Trump's decision to  kick 60 Russian diplomats  out of the U.S. didn't happen in isolation.

The move is part of a broader international rebuke to Russian President Vladimir Putin.

On the same day as Trump's announcement, 14  European Union  member states said they would expel Russian diplomats from their country.

Canada's  foreign ministry  also said it would take action against seven Russian emissaries.

It's a show of solidarity with the U.K., which has  blamed Russia  for the nerve agent used on U.K. soil in an apparent attack on former Russian spy Sergei Skripal.

Russia has denied it was responsible.

SEE MORE: Russia Criticizes UK's Boris Johnson For Comparing Putin To Hitler The U.S. is taking the broadest action today; most of the other responding countries are only throwing out a handful of Russian personnel.

But the scope of the coordinated move sends a strong signal about how seriously the Western world is taking this attack.

Russia has already pledged to retaliate in kind.

The country  already exchanged  one round of tit-for-tat diplomatic expulsions with the U.K.