US official says talks with Russia on Ukraine 'moving forward' / Russia-US dialogue on Ukraine continues with hope for mutually acceptable result -- Lavrov / Trump Calls For Ukraine And Russia To Meet For 'Very High Level' Talks, Says They Are Close To Deal / Putin Ready for Ukraine Talks 'Without Preconditions' - Kremlin / US envoy Witkoff and Putin discuss direct Russia-Ukraine talks / Russia ready for Ukraine talks without preconditions, says Putin / Trump says talks with Ukraine and Russia may take place in Rome / Trump calls for Ukraine and Russia to meet for talks 'at very high levels,' says they are 'close to a deal' / Trump says Russia & Ukraine 'very close to deal' with 'most points agreed' after Putin's 'constructive' talks with US / Russia claims progress in Ukraine talks as US envoy meets Putin