Yemeni President Abd Rabbuh Mansour Hadi arrived in the Yemeni city of Aden on Tuesday from Saudi Arabia, a presidential source told Anadolu Agency.A number of ministers accompanied Hadi, who returned for the second time to Aden since the Yemeni conflict erupted in March. Hadi's first visit was in September following six months in exile in Saudi Arabia. Residents told Anadolu Agency that warplanes have been flying intensively above the presidential palace in Maashiq district.Yemeni officials said Aden will become the country's temporary capital. Sources said that Hadi is expected to stay in Aden until the end of November before he leaves for a visit to a number of countries.Yemen has remained in turmoil since September 2014, when the Shia Houthi militant group overran capital Sanaa and other parts of the country.In March, Saudi Arabia and its Arab allies began an extensive air campaign aimed at reversing Houthi gains in Yemen and restoring Hadi's government.Since Riyadh launched its air campaign, at least 2,600 Yemeni civilians have been killed and more than 5,000 injured, while the number of internally displaced people in the country has risen to some 2.3 million, according to UN figures.