Κόσμος Six reasons why tensions over Ukraine are so high By NewsBay - 25 Ιανουαρίου 2022 Share FacebookTwitterPinterestWhatsAppLinkedinReddItEmailPrintTumblrViber Ειδήσεις Ελλάδα As US troops are placed on high alert, Ros Atkins looks at the causes behind the tension on Ukraine’s border. Ειδήσεις ΠΗΓΗ