WASHINGTON (Reuters) - President Donald Trump's announcement on Monday of the death of the world's most dangerous terrorist, ISIS leader Abu Bakr al-Baghdadi, in a US military operation in northwestern Syria, which Trump said he might post videos of.

The «Kremlin», yesterday, that the killing of Baghdadi is a major contribution to the fight against terrorism, pointing out that he is still waiting to confirm this news.

"If it is confirmed that Baghdadi has already been killed, we will be able to talk about a significant contribution by US President Donald Trump to the fight against international terrorism," President Dmitry Peskov's spokesman, Dmitry Peskov, told reporters.

"This information itself cannot provoke a negative reaction from the Russian authority."

On the other hand, Peskov acknowledged that the Russian military «actually saw in the region US aircraft, US drones», after the Russian Defense Ministry, announced last night, it does not have «reliable information about the activities of the US military in the area of ​​de-escalation in Idlib» .

"The killing of al-Baghdadi is an important moment in the fight against terrorism, but the battle against ISIL is not over yet," British Prime Minister Boris Johnson said.

He added: «We will work with partners in the coalition to end the activities of (ISIS) criminal and barbaric definitively».

French President Emmanuel Macron wrote in Twitter that the killing of al-Baghdadi is a severe blow to IS, but it represents only a stage. The battle continues with our international coalition partners until the terrorist organization is finally defeated. "This is our priority in the Levant."

"Baghdadi's killing encourages us to make efforts to eradicate terrorism," said French Foreign Minister Jean-Yves Le Drian.

She also congratulated the French minister of armies, Florence Barley, "American allies on the process" that led to the killing of Baghdadi, pointing to "continue to fight relentlessly" against the organization, and said on Twitter that "an early retirement of a terrorist, but not to organize."

NATO Secretary General Jens Stoltenberg said the killing of Abu Bakr al-Baghdadi was an "important milestone" in the fight against "international terrorism."

He added in a tweet on the «Twitter» that the Alliance «is still adhering to the war against ISIS is our common enemy».

For his part, the commander of the Syrian Democratic Forces Mazloum Abdi, Washington's partner in the war on IS, said that "sleeper cells will avenge Baghdadi. So everything is expected, including attacking prisons, which are under the control of his forces, and where thousands of members of the extremist organization are.

Saudi Arabia appreciated the US administration's efforts to eliminate al-Baghdadi and pursue its members, and said that the Saudi government is continuing its efforts with its allies, led by the United States, in the fight against terrorism.

Kuwaiti Deputy Foreign Minister Khalid Al-Jarallah stressed the safety of the Kuwaiti-Iraqi border, stressing that its security is proceeding according to a purely Kuwaiti security plan involving the various state agencies concerned.

Iran noted that Baghdadi's death did not mean the end of the fight against the group or its ideology. "The death of Baghdadi does not mean the end of the fight against (IS) terrorism, but the end of a season," government spokesman Ali Rubaie wrote on Twitter.

The Philippines, Indonesia and Malaysia, which are battling ISIS influence in Southeast Asia, praised Baghdadi's death, but said security forces were preparing for a long battle to counter his hardline ideas.