Palestinian Authority President Mahmoud Abbas has accused Hamas of trying to establish its own state in Gaza.
Mr Abbas condemned Hamas as "murderous terrorists" and "coup plotters", over the group's takeover of Gaza last week.
He ruled out talks with the Islamist group - a rival of his Fatah faction - but said the ongoing crisis should not prevent peace talks with Israel.
A Hamas leader in Lebanon, Osama Hamdan, condemned Mr Abbas' speech as "full of lies".
"It is inappropriate for any president of a people to shut the door to dialogue with an integral part of his people whose weight and size he knows full well," Mr Hamdan said.
Last week, Hamas militants seized bases and government compounds in Gaza from rivals Fatah, which Mr Abbas heads.
Mr Abbas said the takeover was a premeditated attack agreed with unspecified "foreign elements" in the region.
It was his t
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