Russia's decision to cut gas supplies to Ukraine this Sunday has caused
concern in much of Central Europe. Most of the European Union's gas is
supplied by Russia, much of it through pipelines that cross Ukraine.
Poland, Hungary, and Austria have already registered drops in supplies.
Slovakia says supplies are stable but pressure in the pipelines has
decreased. The Czech Republic is one of few countries in Central Europe,
which has not been affected so far. But for how long?