Afghanistan on Wednesday signed an oil deal with China which could earn the war-torn country $7 billion over 25 years.

Afghanistan’s first major oil exploration contract will see state-owned China National Petroleum Corporation develop three oil fields in the relatively peaceful north of the country along the Amu Darya river.

Under the deal, signed in Kabul by Afghan mining minister Waheedullah Shahrani and CNPC president Lu Gong Xun, Afghanistan will take 70 percent of the net profits, and the Chinese oil giant will pay 15 percent corporation tax.