HELSINKI -American pop stars Miley Cyrus and Justin Timberlake can go ahead with shows in Finland despite US sanctions against the Helsinki venue’s Russian owners, the concerts’ promoter said on Monday. The concerts were at risk last week as the Hartwall Arena venue is owned by Gennady Timchenko and Boris and Arkady Rotenberg, all of whom feature in a list of visa bans and asset freezes imposed by the United States following Russia’s annexation of the Crimean peninsula from Ukraine.