ASX shutdown for 4 hours on option expiry day. http://www.abc.net.au/lateline/business/items/201110/s335003...

Also, so did HKEx (for the entire day, on option expiry day!) due to a typhoon (?), as far as I recall.

This is non-news. Exchanges do stop trading unexpectedly sometimes and it's hardly specific to Russia. I'm not sure what was the submitter's interest in it.