As this is indication that the US and Ukraine have a provocation ready, Russia will follow their lead and reduce staff or dependents.

Washington has prepared a false flag operation that the whore Western media and all Western governments will blame on Russia.  The incident will involve the 100,000 US/UK trained Ukrainian soldiers massed on the border of the Donbass republics, territory that was formerly part of Russia and is inhabited by Russians that broke away from Ukraine in 2014 amidst the anti-Russian violence of the neo-Nazi state installed by Washington.  

These territories requested to be returned to Russia like Crimea, but the Kremlin refused.  Instead, the Kremlin made the mistake of relying on diplomacy, thinking it had agreement to the Minsk Agreement.   It was another unlearned lesson to Moscow about the worthlessness of agreements with the West.  Yet, Moscow persisted in relying on agreements.  The result is that Moscow is now faced with a plot to provoke Russia into a war with Ukraine.

Washington believes that forcing Russia to bare her teeth will serve the purpose of divorcing Europe from Russian natural gas and rely instead on US liquified natural gas, while reestablishing the Russian Threat that makes NATO a political control device over European economic and foreign policy. It is about preserving the American Empire.  Washington believes that if Europe is dependent on Russia for energy, European foreign policy will escape from Washington's control.