President Donald Trump is denouncing what he's calling the "Horrible and cowardly terrorist attack on innocent and defenseless worshippers in Egypt."

Militants attacked a crowded mosque during Friday prayers in the Sinai Peninsula, settling off explosives, spraying worshippers with gunfire and killing at least 200 people in the deadliest ever attack on Egyptian civilians by Islamic extremists.

Trump says on Twitter that: "The world cannot tolerate terrorism" and that "we must defeat them militarily and discredit the extremist ideology that forms the basis of their existence!"

Trump's tweet came as he was playing golf at one of his Florida courses with Tiger Woods and Dustin Johnson.

The U.N. Security Council and Secretary-General Antonio Guterres have condemned the deadly attack on a mosque in Egypt's Sinai Peninsula in "the strongest terms" and called for the perpetrators to be brought to justice.

The council statement called it a "heinous and cowardly terrorist attack" and reiterated that all acts of terrorism "are criminal and unjustifiable, regardless of their motivation."

Both the council and the secretary-general extended deepest condolences to the families of the victims and to the government and people of Egypt.

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