Syria decried a USA missile strike early Friday, April 7, 2017 on a government-controlled air base where us officials say the Syrian military launched a deadly chemical attack earlier this week.
The conversation was initiated by the American side, the statement said.
Tillerson is expected in Moscow this week for talks with Russian officials.
Mr Johnson will tell his counterparts that Assad has no future in Syria, Russia must stop supporting the regime and a plan to rebuild the country must be drawn up.
"I don't draw conclusions of complicity at all, but clearly they've been incompetent and perhaps they've just simply been out-maneuvered by the Syrians", Tillerson said in an interview with ABC's This Week program.
United States ambassador to the United Nations Nikki Haley explained on NBC's "Meet the Press" Sunday that President Donald Trump chose to act last week and send missiles into Syria because "enough if enough".
US President Donald Trump ordered the missile strike after watching television images of infants suffering from chemical weapons injuries.
On Thursday, Russia also suspended a pact with the U.S.
But the secretary of state said when he meets with the Russian foreign minister this week, he will bring up Russia's obligation under a 2013 agreement to ensure the Syrian government got rid of its chemical weapons.
Turkey, a key backer of the Syrian opposition, has thrown its weight behind a stuttering peace process in the Kazakh capital, Astana, which it hopes will pave a way for a political solution to Syria's devastating war.
U.S. intelligence indicated "that Syrian military forces operating from this airfield were responsible for the chemical weapons attack on Syrian civilians in southern Idlib Province, Syria, that occurred on April 4", Trump wrote.
"If he needs to do more, he will do more", Haley said when asked if Trump would order more strikes.
The statement says King Salman bin Abd al-Aziz al-Saud agreed it "was a necessary response" to the chemical weapons attack by Bashar Assad's government, which killed dozens of civilians in rebel-led northern Idlib.
"The United States failed to achieve its goal with this aggression, which was to raise the morale of the terrorist groups it supports after the victories achieved by the Syrian army", Assad told Rouhani, according to Syrian state news agency SANA.
Despite widespread consensus that the chemical attack was carried out by the Syrian government, most likely using the banned nerve agent Sarin, Iran and Russian Federation have defended the record of its ally in Damascus.
Trump said he was sending the letter as part of his efforts "to keep the Congress fully informed, consistent with the War Powers Resolution".