Moscow also said it was calling an emergency session of the United Nations Security Council, where it is a permanent member, to discuss the "aggressive actions" of the USA and its allies.
Russia's Colonel General Sergei Rudskoi said at a press conference on Saturday: 'This fact of American aggression shows that US is not interested in conducting an objective investigation, wishes to disrupt the process of peaceful resolution in Syria and destabilise the situation in the region and has nothing to do with the previously proclaimed goals of fighting worldwide terrorism'.
U.S., French and British air forces conducted a massive missile strike on military and civilian infrastructure in Syria from 3:42 to 5:10 Moscow time (0042-0210 GMT), the statement added.
Putin said the USA actions in Syria made the humanitarian catastrophe worse and caused pain for civilians.
Russia views the military strikes against Syria as an act of aggression and a declaration of war on a sovereign state, Sherin said, according to Russian news agency Sputnik.
The Kremlin on Saturday condemned Western air strikes on Syria where its armed forces are backing President Bashar al-Assad.
"It is necessary to consider not only deliveries of missile defense systems, but also deliveries accompanied by those people who can train the personnel of these countries, so that Syria, Iran and North Korea could deploy these systems, if they wanted", Sherin said.
Moscow may consider supplying S-300 surface to-air missile systems to Syria and "other countries", Colonel-General Sergei Rudskoi told a televised briefing on Saturday.
"In the past year and a half Russian Federation has fully restored Syria's air defence system and continues to further upgrade it", Rudskoi said.