The Minister for Foreign Affairs says that any Brexit deal has to be based on the withdrawal agreement.
Simon Coveney's comments come as Boris Johnson has promised a new renewed effort to secure a deal with the EU before the Brexit deadline.
The UK's negotiators will now meet their EU counterparts twice a week for the whole of September.
It follows a backlash over the Prime Minister's decision to suspend Parliament next month, effectively limiting MPs' chances of preventing a no-deal scenario.
Minister Coveney says the backstop is non negotiable..............