ANTAKYA, Turkey, Feb 7 (Reuters) - Turkish President Tayyip Erdogan on Tuesday declared a state of emergency in 10 provinces devastated by two earthquakes that killed more than 5,100 people and left a trail of destruction across a wide area of southern Turkey and neighbouring Syria. 5 million people were affected in an area spanning roughly 450 km (280 miles) from Adana in the west to Diyarbakir in the east, and 300 km from Malatya in the north to Hatay in the south. humanitarian official in Syria said fuel shortages and the harsh weather were creating obstacles