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We asked back in December whether the Sochi Winter Olympics, which formally begin Friday, were heading for disaster, what with terrorist threats, an uncooperative climate, cost overruns and corruption on a scale imaginable only in Russia.

Meanwhile, Putin - who described the call with Trump, which he took from a music school on a visit to the city of Sochi, as "frank, informative and constructive" - also spoke of the potential for a ceasefire.

Airports at several other cities including Sochi, Kazan, Kirov and Nizhnekamsk also reported flight disruption.

Some of her duties with the network included hosting a daily soccer show, reporting from the 2014 Winter Olympics in Sochi and serving as the Ducks sideline reporter in 2014.

In a statement, lawyers for Mr Abramovich - who now reportedly divides his time between Istanbul, Tel Aviv and the Russian resort of Sochi - said he had "always obtained independent expert professional tax and legal advice" and "acted in accordance" with it.