Morning top 5: Trump offers Russia full support following St Petersburg bombing; Cabinet to discuss "root and branch" review of gardaí

The top stories this Tuesday morning ...

Donald Trump has offered the Russian President the full support of the US after a deadly bombing in St Petersburg.

11 people were killed and around 45 others were injured yesterday after the blast on an underground train.

Three days of mourning are to be held in the city following the attack.

The Russian President, Vladimir Putin has said that terrorism hasn't been ruled out.

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The scope for an independent review of An Garda Síochána is up for discussion at Cabinet today.

The Tánaiste and Minister for Justice Frances Fitzgerald is considering awarding more powers to the Policing Authority and the Garda Ombudsman as part of a root and branch review of the force.

The review comes after revelations regarding falsification of garda statistics and errors leading to thousands of wrongful convictions.

The review is expected to be conducted by an independent panel, which may include international experts.

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The Minister for Children has announced a full review of the Childcare Act, to better protect children in crisis situations.

Katherine Zappone said the review will focus on ensuring that the views of children are central to any decisions which impact on their family and home life.

It will also aim to ensure that children who are being taken into care should have the support of a "Guardian ad litem" who looks after their interests in court proceedings.

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The makers of a major Cystic Fibrosis drug are due to enter new talks with the HSE today over the price of the medication.

HSE managers have been told to clear their diaries for the week, in an effort to bring negotiations on the cost of Orkambi to a final conclusion.

Orkambi has been heralded as a 'wonder drug' for patients with the condition - but is not available to Irish patients because of its price.

Health Minister Simon Harris is hopeful that talks will wrap up by this week, with a good deal for the taxpayer. 

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The widower of murdered Irish woman Michael McAreavy is due to make a public appeal today for help finding her killer.

John McAreavy has travelled to Mauritius, where 27-year-old Michaela was murdered on their honeymoon five years ago.

Two former hotel workers were acquitted of the crime following a trial in the summer of 2012.

Mr McAreavy will host a press conference today in an effort to reinvigorate the investigation.