Deal signed to end Ukraine crisis.

Ukraine's President and opposition leaders agreed Friday to a deal meant to end the country's political crisis and bloody fighting that has left parts of Kiev a war zone.

President Viktor Yanukovych, opposition leaders and representatives of the European Union signed the deal Friday afternoon after a night of difficult negotiations that stretched well into the day.

"Good compromise for Ukraine. Gives peace a chance. Opens the way to reform and to Europe," Polish Foreign Minister Radoslaw Sikorski said via Twitter before the signing was completed.

Earlier, an ITN/ITV camera captured Sikorski telling a protest leader to accept the deal.

"If you don't support this, you'll have martial law, you'll have the army. You will all be dead," he can be overheard as saying.

A cheer went up from the crowd in Kiev's Independence Square when the agreement was announced. Protesters waved Ukrainian flags under clear skies free of the choking smoke from burning barricades that has characterized recent days.

But it remained to be seen if the deal would be enough to overcome the nation's deep divisions and mistrust on both sides inflamed by the recent violence.