Macron did not specify whether France is planning military action against Syrian President Bashar Assad's government.
The attack at the weekend led to widespread condemnation, as Theresa May agreed with Trump and French president Emmanuel Macron that the global community "needed to respond" following the suspected attack.
"With every victory achieved on the field, the voices of some Western states are raised and actions are intensified in an attempt by them to change the course of events. these voices and any possible action will contribute nothing but an increase in instability in the region, threatening worldwide peace and security", Mr al Assad said according to Syrian state television.
But the pinpoint strike did not deter Assad and U.S. officials, speaking on condition of anonymity, have since investigated as many as 10 suspected chemical attacks. These are the questions and opinions we should be exploring in relation to the war in Syria and the discussion engendered by politicians on the way forward.
Downing Street said the Prime Minister spoke to the United States and French presidents on Tuesday, and said they had agreed to "continue working closely together" to ensure those responsible were "held to account".
Talk of a US attack on Syria is part of a "psychological war meant to project power that the West has lost", Bouthaina Shaaban, Assad's media and political adviser, said in an interview late Wednesday with Lebanon-based Al Mayadeen TV.
In a statement, Senator Bernie Sanders said Trump has no legal authority for broadening the war in Syria.
Mr Putin has also talked to the Israeli Prime Minister Benjamin Netanyahu, urging him not to take action to destabilise Syria and threaten its security.
A YouGov poll in The Times conducted this week found that 43 percent of voters oppose strikes in Syria, with 34 percent unsure and only 22 percent supportive.
Labour leader Jeremy Corbyn said on Wednesday that MPs "should always be given a say on military action".
One Tory backbencher, who voted against military intervention in Syria in 2013, said she now supports bombing the regime without a parliamentary vote. The country often has restricted itself to supporting roles, such as the participation of reconnaissance jets in the worldwide campaign against the Islamic State group.
"Our president has not yet made a decision about possible action in Syria", Ms. Haley told the council.
"The position is a very risky one because of Russian involvement, also because we have an erratic president of the United States".
Anti-conflict coalition Stop the War called on Britons to lobby their lawmakers to prevent an "escalation of the war" and planned a Friday protest outside Downing Street.
The same officials say Syria has continued to produce or procure chlorine, which also has industrial and agricultural uses.
Conservative former London mayoral candidate Zac Goldsmith, tweeted: "We need a clear response to the Syrian chemical outrage".
"What we've got here in Syria is a choice between monsters on the one hand and maniacs on the other", Julian Lewis, the chairman of the House of Commons defence committee, told the BBC.