The Syrian regime and its Russian and Iranian backers have vowed to keep up the fight against "terrorists" despite threats of further United States strikes against the regime following the chemical attack.
Admiral Michelle Howard, who heads U.S. naval forces in Europe and Africa, told Reuters U.S. forces are prepared to carry out further strikes if needed.
The Lebanese militant group has invested thousands of fighters in the defense of Assad's government.
The Kremlin said in a statement Rouhani also spoke with Russian President Vladimir Putin by phone.
When asked if President Trump could order more air strikes against the Syrian regime, she said: "If he needs to do more, he will do more".
"What the Americans did is a strategic mistake and offense". It has organized several Shiite militias from around the Middle East to fight in support of Assad's government and has sent troops and officers from its own Revolutionary Guards.
Almost 80 people died in Khan Sheikhoun town in the rebel-held northern province of Idlib on 4 April after Syrian planes allegedly carried out gas attacks, which the United States said was the banned nerve agent sarin. The Syrian government didn't do it.' Why were they that defensive that quick?
The U.K. defense secretary of state also provided a solution to the Syrian problem saying: "It's time for Russian Federation to be part of the solution and engage constructively with the UN-mediated peace talks".
A day before, defending the U.S. strikes on a Syrian air base suspected of using chemical weapons, Haley warned the Assad regime of more strikes if it did not stop using chemical weapons against innocent civilians.
Tillerson will meet with Russian Foreign Minister Sergey Lavrov in Moscow later this week.
Tillerson was a prominent fixture during the most important foreign policy period in Trump's young presidency: a two-day summit with Chinese President Xi Jinping that coincided with the strikes against Syria.
Turkish Foreign Minister Mevlut Cavusoglu on Sunday played down concerns of a rift with Russian Federation over Ankara's support for the strike, saying Turkey was committed to the cease-fire mechanisms it has developed with Russian Federation for Syria.
Trump's decision to strike Syria won widespread praise from other nations, including Saudi Arabia and Turkey, which support the Syrian opposition.
"My priority is now to continue contact with the United States and others in the run-up to the G7 meeting on April 10-11 - to build coordinated global support for a ceasefire on the ground and an intensified political process", the statement said.
Russian Federation may have been operating an unmanned drone and military aircraft in the region, according to USA military officials cited by BuzzFeed News on Friday.
The warships USS Porter and USS Ross in the Mediterranean Sea launched dozens of Tomahawk missiles at the Shayrat air base, which the Pentagon says was involved in a chemical weapons attack this week.
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That, Trump said, is "very bad for Russia" and "very bad for mankind" and the world. " Trump has been Trump for a long time ". The more likely outcome if Bannon goes is that he returns to Breitbart and continues to expand on its emerging media empire.
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