Turkey has expelled the Israeli ambassador over Israel's refusal to apologise for last-year's deadly raid on a Gaza-bound flotilla.
Officials in Ankara said it was also suspending all remaining military agreements with Israel.
The announcement came as a UN report on the raid, in which nine activists were killed, was due to be published.
Turkey has insisted that Israel apologise for the raid but it has consistently refused to do so.
The BBC's Jonathan Head, in Istanbul, says relations between Turkey and Israel have been frozen since last year's flotilla incident, but now they are being downgraded to the lowest possible level.
A leaked copy of the United Nations report into the Israeli military raid on the Turkish-led flotilla trying to break its blockade of Gaza says the Israelis did use excessive force.
But the leaked report concludes that Israel's naval blockade of Gaza is legal.
BBC News - Turkey expels Israeli ambassador over Gaza flotilla row
A good positive move on behalf of the Turks, the israelies are quickly losing all the support that they had in the region, the Egyptians are already p!ssed. Now the Turks are gone.