We should raise this topic each time we meet with the Ukrainian political leadership, Robert Fico said BRATISLAVA, May 3. /TASS/. It is in Slovakia’s national interests to pump oil and gas to Central Europe via Ukraine through its transport network, Prime Minister Robert Fico said. "Oil and gas transit via Ukraine to Central Europe with the use of Slovakia’s transport system is in our national interests. We should raise this topic each time we meet with the Ukrainian political leadership," he