Published Sunday, 06 December 2009
McGuinness told the DUP leader he had to let people know exactly why he was still refusing to agree a date for the transfer of justice responsibilities from Westminster.
Sinn Fein has warned that any further delays will render the power-sharing administration unsustainable - a claim that has been dismissed by the DUP as a bullying threat.
While both parties have agreed a £1bn funding package with the Treasury, Mr Robinson is understood to have sent an eight page letter to Prime Minister Gordon Brown outlining a number of other so-called 'confidence building' measures his party want to see implemented before devolution takes place.
But the DUP has denied it amounts to a shopping list of preconditions, insisting that the only precondition is the attainment of confidence within the unionist community for the move.
On Sunday Mr McGuinness told an audience of republicans in Derry that the letter needed to be made public.
"The DUP keep harping on about community confidence. Fair enough, but I must make it crystal clear that the eight page letter which I believe is loaded with preconditions and sent by Peter Robinson to the British Prime Minister, was neither seen or agreed by me, his partner in government, as part of our agreed process paper.
"Therefore I believe that publication of this letter is both reasonable and essential. The entire community is entitled to know what is in that letter. I am now calling on Peter Robinson to make the public aware its contents."
Mr McGuinness remarks came hours after Mr Robinson rejected Sinn Fein claims that he and his party were not governing on the basis of equality.
"Simply because Sinn Fein has a demand and can't get other parties to agree with their demand isn't an example of inequality," he said.
"It means that they haven't been able to pursue their political agenda or at least that aspect of it.
"There's no requirement on me to meet the demands of Sinn Fein and to fulfil their political agenda."
Last week, Mr Robinson and Mr McGuinness sent out a joint letter to all Assembly members outlining the procedure for electing a future Justice Minister.
Both main parties have agreed not to nominate a candidate for the role, but have said the occupant must secure cross community support in a vote at the Assembly.
That marks out the non-aligned Alliance party as the clear favourite to take the portfolio But while the deadline for nominating candidates is next Friday, Alliance has indicated it will not do so until a policy programme for the Justice Ministry is set out.