Morning top 5: Trump and Clinton clash in first debate; Dublin Bus services operating as normal today

The top stories this Tuesday morning...

US presidential candidates Donald Trump and Hillary Clinton have clashed in their first TV debate.

The 90-minute showdown in the US overnight was an attempt to persuade undecided voters to back them.

An estimated 100 million people tuned in last night - making it one of the most watched broadcasts ever.

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The debate focused on several key topics including race, foreign policy and crime.

Hillary Clinton also mentioned Donald Trump's tax returns, suggesting he might be deliberately keeping them secret.

Meanwhile, Mr Trump used the debate to hit back at his Democratic rival.

He promised to make his finances public "against my lawyer's wishes - but only if Mrs Clinton reveals e-mails she controversially sent from a personal account when she was Secretary of State.

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Dublin Bus services are operating as normal this morning after a planned strike was called off.

The NBRU agreed yesterday evening to suspend the planned 48 hour stoppage in order to engage in "intensive and comprehensive discussions" on a settlement of the pay dispute.

Management and unions will meet at the Workplace Relations Commission this morning.

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A nurses and midwives strike could be on the cards, if one group of graduates does not receive a pay rise.

The INMO, the PNA and SIPTU are staging a protest outside the Dáil today, before meeting with Health Minister Simon Harris.

They are calling for an incremental credit to be restored for those who graduated between 2011 and 2015.

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Four men have been charged with a series of dissident republican terrorist offences in the North.

It is after police seized an improvised rocket launcher in the Lurgan area of Co Armagh last week.

A 22-year-old man has been charged with the attempted murder of police officers and possession of explosives with intent to endanger life.