By Phil Stewart and Warren Strobel WASHINGTON (Reuters) - The U.S. administration is seeking to approve a sale of as many as 12 A-29 Super Tucano light attack aircraft to Nigeria to aid its battle against the extremist group Boko Haram, U.S. officials say, in a vote of confidence in President Muhammadu Buhari's drive to reform the country's corruption-tainted military. Washington also is dedicating more intelligence, surveillance and reconnaissance assets to the campaign against the Islamist militants in the region and plans to provide additional training to Nigerian infantry forces, the officials told Reuters, speaking on condition of anonymity to discuss the administration's plans. The possible sale -- which the officials said was favored within the U.S. administration but is subject to review by Congress -- underscores the deepening U.S. involvement in helping governments in north and west Africa fight extremist groups.
Nigeria's President Muhammadu Buhari on Thursday urged other countries and the United Nations to speed up the process of repatriating stolen money held abroad, which he said was becoming "tedious". Since taking office last May, after winning an election largely on his vow to crackdown on corruption, Buhari has sought help from several nations including the United States and Switzerland to recover money he said was stolen by public officials. "We are looking for more cooperation from the EU, United States, other countries and international institutions to recover the nation's stolen assets, particularly proceeds from the stolen crude oil," said Buhari. "It is taking very long and Nigerians are becoming impatient," said the president, adding that the process had "become tedious".