Amal El-Wahabi, 27, whose British husband is believed to be fighting in Syria, was found guilty by an Old Bailey jury of funding terrorism by arranging to send 20,000 euros in cash to Turkey at his request.
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British soldiers will join troops from some 30 countries who work in the country.
The demand comes after the Prime Minister urged a "grown up" relationship between her government and the devolved administrations.
The rapper failed to make it to London in time as he had problems with his passport.