On April 7, 2017, Trump ordered the United States Navy to launch cruise missiles at Shayrat Air Base in response to the Khan Shaykhun chemical attack. The missile attack had wide international support and was highly praised by the majority of Republicans as well as Democratic senators. The move drew criticism from Russia, whom the United States had warned in advance about the attack. Although Russian anti-missile defenses such as S-300's failed to deter the missile attack, Russian forces suffered minimal damage, as the United States had deliberately avoided striking areas of the base used by Russia. Russian Prime Minister Dmitry Medvedev criticized the strike as "good news for terrorists".