The UN Chief and the powerful Security Council were joined by other UN bodies and the President of the General Assembly in strongly condemning the attack that killed 12 people,including the top editor, prominent cartoonists and police officers.
"I want to express my outrage at the despicable attack today against the French magazine Charlie Hebdo. It was a horrendous, unjustifiable and cold-blooded crime," the UN Chief said.
"This act of violence can in no way be justified. This is an attack against freedom of expression and freedom of the press - the two pillars of democracy," Moon said.
Masked gunmen opened fire with assault rifles in the office of Charlie Hebdo in central Paris, killing four of the magazine's cartoonists and its editor.
The unidentified gunmen then fled the scene, exchanging shots with police in the street, killing two officers.
In remarks delivered during a New Year visit to the UN Correspondents Association, the Secretary-General extended his deepest condolences to the families of the victims, stressed
his solidarity with the Government and people of France and said he trusted the French authorities to do all in their power to bring the perpetrators to justice quickly.
"This horrific attack is meant to divide. We must not fall into that trap," he said. "This is a moment for solidarity."
"Around the world, we must stand strong for freedom of expression and tolerance and stand against forces of division and hate," he said.
The 15-nation Security Council said in a press statement that it condemns in the strongest terms the barbaric and cowardly terrorist attack against the French magazine.
The members of the Security Council "strongly condemned this intolerable terrorist act targeting journalists and a newspaper" and underlined the need to bring perpetrators of these reprehensible acts of terrorism to justice.
"The members of the Security Council reaffirmed the need to combat by all means, in accordance with the Charter of the United Nations, threats to international peace and security
caused by terrorist acts, and that any acts of terrorism are criminal and unjustifiable, regardless of their motivation, wherever, whenever and by whomsoever committed," the statement said.

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