MOSCOW (Reuters) - Russian Foreign Minster Sergei Lavrov said on Monday the sanctions which the United States has imposed against Turkey over the missile system buy from Russia were illegitimate and showed arrogance toward international law, Interfax news agency reported. The United States imposed sanctions on Turkey over its purchase of Russian S-400 air-defence system and targeted its Defence Industries Directorate, its president and three employees, a U.S. Treasury web site showed on Monday.