UK impounds private jet

British officials were on Wednesday investigating possible links between Russian billionaire Eugene Shvidler and a private jet impounded by the authorities after it landed in the UK, as part of a further tightening of the Russian sanctions regime. The move to prevent the jet from departing came after the UK government announced wide-ranging powers to detain any aircraft in the UK deemed to have links to Russian nationals. It also made it a criminal offence for any aircraft with Russian links to enter UK airspace. The Department for Transport has grounded a private jet, which had flown in from New