Since a U.S. Navy destroyer launched the missiles early Friday in Syria, the Trump administration has struggled to explain how the attack - which came four years after President Barack Obama chose not to strike Assad unilaterally after a similar use of chemical weapons - fits into its broader policy on Syria and the Middle East.
Her comments appeared at odds with those of Secretary of State Rex Tillerson, who said the US missile strike was aimed exclusively at deterring the use of chemical weapons by Assad.
In his first televised interview, H.R. McMaster pointed to dual USA goals of defeating the Islamic State group and removing Assad from power.
During the 2016 presidential campaign, Trump said defeating Islamic State was a higher priority than persuading Assad to step down.
"What we should do is focus on ISIS".
Foreign-policy analysts cautioned that ordering a military strike before developing a strategic policy carried significant risks for the White House.
"Russia's failures to rid Syria of weapons stockpiles has led to the killing of more children and innocents", he told CBS News.
Rouhani also called for an investigation of the suspected chemical weapons attack in Syria last week, and he warned that the U.S. strikes in response risked escalating extremism in the region.
Russian Federation swiftly condemned last week's attack.
Asked by reporters what the future holds for Turkish-Russian ties after Ankara welcomed USA missile strikes against a Syrian regime airbase last week - the opposite of Moscow's reaction - Mevlut Cavusoglu said, Turkey "does not have to take a side between Russia and the U.S". He did not rule out additional strikes if Assad continued to engage in atrocities against rebel forces with either chemical or conventional weapons.
According to Bishop, the United States attack was a "proportionate response", to allegations that Assad used chemical weapons in the Syrian city of Idlib.
On whether Assad should be removed from power, McMaster said: "We are not saying that we are the ones who are going to effect that change. Russian Federation should ask themselves, 'What are we doing here?'" McMaster said.
But Trump's airstrike last week on a Syrian airbase, followed by tough language from his top diplomats regarding Russia's support of the Syrian regime, suggests that Putin's options in Syria - where he very recently was thought to hold all the cards - are rather more limited than many previously thought. US analysts said that despite his show of force, Trump has offered no broader strategy to achieve a cease fire between the Assad regime and rebel groups to help broker a diplomatic solution.