Despite expectations of a reduction in tensions in the Islamic Republic's war with the United States, attacks on oil tankers in the Strait of Hormuz continue. At least 10 ships were attacked in the first ten days of November, according to data from the Washington Institute for Near Eastern Studies. Pictures confirmed by Reuters also show a fire at an oil tanker near Oman and the spilled oil reaching the shores of that country. The Islamic Republic of Iran claimed responsibility for the attack on three oil tankers on Sunday, November 17, saying the vessels were crossing "illegal routes".