He said France now wants to involve Western powers, Russian Federation and Turkey in a new diplomatic initiative to find a sustainable political solution in Syria.
Asked if using military force would restore peace, Macron said that "France is the country that has been the most active in terms of diplomacy and humanitarian aid in recent months, and we came at a time when this strike was essential to give credibility to our community".
French President Emmanuel Macron said his "red line" had been crossed by the Syrian regime as he launched airstrikes on the country alongside the United States and UK today.
President Macron also said they will decide whether to strike back when all the necessary information has been gathered.
"We convinced him it was necessary to stay for the long term".
French President Emmanuel Macron said the Assad regime "crossed a red line" with the chemical attack in Douma. And, he added, "Special services of a country, which is now seeking to be in the first ranks of the Russophobic campaign, were involved in this staged event".
Macron confirmed that he will visit St. Petersburg, Russia, in May.
US President Donald Trump and his French counterpart Emmanuel Macron discussed on Saturday the recent joint missile strikes against Syria and agreed to continue the worldwide fight against Daesh terrorist group, outlawed in Russian Federation, the White House press service said.
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The U.S. -led operation won broad Western support.
Early on Saturday, the United States, France and Britain launched 105 missiles targeting what they said were three chemical weapons facilities in Syria in retaliation for a suspected poison gas attack in Douma on April 7.
British Prime Minister Theresa May said in London that the West had tried "every possible" diplomatic means to stop Assad from using chemical weapons.
Macron said France wanted to remove the Syrian regime's chemical weapons capabilities.
The French presidency issued a video on Twitter showing what it said were war planes taking off as part of the intervention. "It is not about regime change".
"In addition we expect our regional allies and partners to take greater responsibility both militarily and financially for securing the region", she added.
Political opponents had criticized Macron for drawing a red line over chemical attacks after the unfortunate precedent set by former U.S. President Barack Obama, who had put himself in a tough spot with a similar ultimatum in 2012. In fact, Gen. Joseph Dunford, chairman of the Joint Chiefs of Staff, said no additional attacks were planned.