UN warns of worsening crisis as at least 8,000 Syrians fled into Turkey over the last 24 hours alone.

The United Nations is warning of an escalating humanitarian crisis inside Syria.

The world body says the number of people needing aid could rise to four million by next year.

At least 8,000 Syrians have fled into Turkey over the last 24 hours alone.

Al Jazeera’s Sue Turton reports from the Turkey-Syria border.