Washington, Ramadan 8, 1436, Jun 25, 2015, SPA -- US President Barack Obama has invited Nigeria's new president to the White House for talks on a range of topics, including cooperation between the two countries in the fight against terrorist group Boko Haram, the White House said Thursday, dpa reported. President Muhammadu Buhari will visit the White House on July 20. -- SPA 23:37 LOCAL TIME 20:37 GMT www.spa.gov.sa/w