May asks EU for Brexit delay, but Macron says no guarantee

European Union leaders were deciding whether to save Britain from a precipitous and potentially calamitous Brexit, or to give the foot-dragging departing nation a shove over the edge.

Prime Minister Theresa May pleaded with the 27 other EU leaders at an emergency summit to delay Britain's exit, due on Friday, until June 30 while the UK sorts out the mess that Brexit has become.

Some were sympathetic, but French President Emmanuel Macron struck a warning note on Wednesday.

"Nothing is decided," Macron said, insisting on "clarity" from May about what Britain wants.

"What's indispensable is that nothing should compromise the European project in the months to come," he said.

At a pre-dinner meeting in Brussels, May made the case for the delay. She believes that a June 30 deadline is enough time for Britain's Parliament to ratify a Brexit deal and pass the legislation needed for a smooth Brexit.

But British lawmakers have rejected her divorce deal three times, and attempts to forge a compromise with her political opponents have yet to bear fruit.

May spoke to the 27 EU leaders for just over an hour, before they met for dinner without her to decide Britain's fate. In contrast to some testy recent summits, there were signs of warmth and even humour.

May and German Chancellor Angela Merkel were filmed laughing over a tablet bearing an image showing the two of them speaking to their respective Parliaments on Wednesday wearing similar blue jackets.

Many leaders said they were inclined to grant a Brexit delay, though they suggested a longer delay would likely be needed, given the depth of Britain's political disarray.

Luxembourg Prime Minister Xavier Bettel said he hoped for "an intelligent extension." "If it's a longer extension there is no lunch for free, so we need to know why," he said.

May signalled she would accept a longer extension, as long as it contained a get-out-early cause should Britain end its Brexit impasse.

"What is important is that any extension enables us to leave at the point at which we ratify the withdrawal agreement," May said as she arrived in Brussels.

She added that she was hopeful it could be as soon as May 22 a key date since that would avoid the need for Britain to participate in elections for the European Parliament.

Several months have passed since May and the EU struck a deal laying out the terms of Britain's departure and the outline of future relations. All that was needed was ratification by the British and European Parliaments.

But UK lawmakers rejected it three times. As Britain's departure date of March 29 approached with no resolution in sight, the EU gave Britain until Friday to approve a withdrawal plan, change course and seek a further delay to Brexit, or crash out of the EU with no deal to cushion the shock.

If no extension materialises Wednesday, Britain will leave the bloc Friday with no deal, unless it cancels Brexit independently.

Economists and business leaders warn that a no-deal Brexit would lead to huge disruptions in trade and travel, with tariffs and customs checks causing gridlock at British ports and possible shortages of goods.

A disorderly Brexit would hurt EU nations, as well as Britain, and all want to avoid it.

"I don't anticipate that the UK will leave this Friday," Irish Prime Minister Leo Varadkar said. "I'm very confident that there will be an extension agreed today. What's still open is how long that extension will be and what the conditions will be." But the bloc's patience is wearing thin.

Macron, in particular, has become increasingly exasperated with the political division and uncertainty in Britain, and has laid out conditions for agreeing to a new delay.

They include a "credible prospect" of some kind of solution to the British political deadlock, a promise that Britain won't keep asking for more delays, and guarantees that Britain would not be involved in future EU decisions while its Brexit drama is playing out.

Several leaders also said they would require assurances of good behaviour in return for another delay.

Dutch Prime Minister Mark Rutte said the EU leaders' decision would hinge on "what her plan is now to get that withdrawal agreement through Parliament, and how we can get guarantees that in the meantime the United Kingdom will stay as a loyal partner."