Thousands of Syrian refugees poured into northern Iraq, taking advantage of a new bridge along the largely closed border, with most being women, children and elderly people from areas of heavy fighting, including Aleppo and Hassakeh.
Some Syrian refugees had been allowed in since mid-July for reasons of family reunification or dire humanitarian need, the UN added.
More top news
French presidential candidate Francois Fillon's wife has been handed preliminary charges in connection with the alleged "fake jobs" scandal.
It will be a mild but cloudy start for many of us on Wednesday morning, with rain in the west and drier and brighter weather in the east.
One week on from the Westminster terror attack a vigil is to be held on Westminster Bridge to remember the victims killed by Khalid Masood.