Morning top 5: Obama appeals for Brexit calm; UK party leaderships; and Dublin Bus drivers want Luas pay

The top stories this Thursday morning...

US President Barack Obama has said the UK vote to leave the EU raises "long term concerns about global growth".

He said the result of the referendum would freeze the possibilities of investment in Great Britain or in Europe as a whole.

And he appealed for calm as the UK seeks to negotiate its exit from the European Union.

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Theresa May and Boris Johnson will enter the race to become the next British prime minister later.

The two Tory heavyweights are expected to say they have got the ability to unite the party after the departure of David Cameron.

Meanwhile the Labour leader Jeremy Corbyn appears to be holding onto his job, for now.

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The Minister for Disability says he wants a free vote in the Dáil over whether to allow abortion in cases of fatal foetal abnormalities.

The house is set to discuss proposed legislation today which would permit terminations when babies are not expected to survive.

The Attorney-General says the bill, put forward by Independent Deputy Mick Wallace, is unconstitutional - but ministers from the Independent Alliance group want the right to support it anyway.

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Turkey is holding a national day of mourning for the victims of a triple suicide bombing at one of the world's busiest airports.

Some 41 people died and many others were wounded in the gun and bomb attack in Istanbul on Tuesday.

Islamic State are thought to behind the massacre.

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Drivers at Dublin Bus are before the Labour court today in a bid to get pay parity with Luas drivers.

The National Bus and Rail Workers Union and SIPTU are calling on the body to implement pay increases for the capital's bus drivers.

They say the recent dispute at Transdev has brought to light the difference in the wages of Luas and Bus drivers.