Moscow is closing on 10th March.

After the massacre in Moscow come to an end
there will be the closing down of Moscow.  'The Neo-Imperium, fresh from their success in controlling the Moscow Underworld, turns its sights to controlling the Russian Underworld.  They have commissioned a team of hitmen to assassinate the leads of the Moscow Mafia in a show of force.  You are one of the leaders that is on the hitlist, and you need to track down these hired guns and get to them before you become the next fatality.'

Q: What do you mean closing?

A: Moscow will no longer be accessible. It will be grayed out on the travel menu and any attempts to get to Moscow will be stopped with a popup.  You will not be able to vault or revault Moscow collections.  You will not be able to collect from Moscow properties or access the Moscow bank.  You will not be able to complete Moscow achievements.  You will not be able to fight or rob in Moscow.  Any progress or currency will be frozen.