Refugee camps appear on Syria-Turkey border as UN details 'crimes against humanity'

New refugee camps are being built along the Syrian border with Turkey to house thousands of people who have fled the northern city of Aleppo.

Một bé trai Syria gần điểm băng qua biên giới Thổ nhỉ Kỳ Source: AAP

Syrian government forces, backed by Russian airstrikes, have been fighting opposition fighters in the former key industrial city.

Turkish officials say about 77,000 people are sheltering in camps built along the Turkish border.

The Turkish Prime Minister says they will only be allowed to cross when necessary.