MORGAN Stanley said it had turned "bullish" on Nigeria's government bonds on hopes the declared victor in the country's presidential elections, Bola Tinubu, will soon press on with key fiscal and financial market improvements. "In the short-to-medium term we think that there are potential positive triggers," the Wall Street bank's main analyst for the country, Neville Mandimika, wrote in a note, entitled, "As the dust settles, we turn bullish." Tinubu, whose victory in Saturday's election with 37% of the vote is being challenged by rivals in court, made a number of pledges on reforms during his election campaign. Morgan Stanley said positive…