UUP, SDLP and Alliance on Northern Ireland talks progress
David Cameron has left talks at Stormont in Northern Ireland saying a deal was not possible but he had offered "financial firepower" for one.
The prime minister said he was putting what would amount to "almost £1bn of spending power for the coming years" if agreement could be reached.
Speaking outside Stormont, UUP leader Mike Nesbitt described the talks as being "not in a good place", adding that it needs to be fixed "urgently".
SDLP MP Mark Durkan described the offer as "junk and junker" with no new money being offered, while Alliance Party leader David Ford said there were still issues to be resolved following talks with Richard Hass in 2013.