Russia threatens ‘consequences’ for US over Crimea missile strikes POLITICO EuropeRussia summons the American ambassador over a deadly attack that Moscow says used US-made missiles Yahoo! VoicesRussia vows retaliation against US for Ukraine’s ATACMS missile attack on Crimea ReutersRussia summons US ambassador over ‘barbaric’ Sevastopol missile strike Al Jazeera EnglishRussia placing military near civilians in Crimea, to deter attacks: ISW Business Insider