Obama tells Kenyans they can succeed, sees challenges

By Jeff Mason and Edith Honan NAIROBI (Reuters) - Barack Obama told Kenyans on Sunday on his first presidential trip to his father's homeland that there was "no limit to what you can achieve" but said they had to deepen democracy, tackle corruption and end exclusion based on gender or ethnicity. After political talks on Saturday with President Uhuru Kenyatta on security and business, his speech to a packed sports hall in Nairobi struck a personal note, talking of his own experienc