NEW : Afghanistan , climate change , economy , nuclear civil deal on world leaders ' agenda . Indian Prime Minister Manmohan Singh is on first official visit of his country . Singh will attend White House state dinner . President Obama accepts invitation to visit India .
NEW : Afghanistan , climate change , economy , nuclear civil deal on two leaders ' agenda . Indian Prime Minister Manmohan Singh is on first state visit of Obama presidency . Singh will attend White House state dinner . President Obama accepts invitation to visit India .