Possible Clues:

• A rich doctor behind Ford in Pakistan
• Old craft returned carrying a letter from Greek port
• Pakistani metropolis
• Turkish capital left by first couple meeting Greek character in port
• Capital on the Arabian Sea
• Former world capital called 'City of Lights'
• Pakistan's most populous city
• Pakistan's first capital
• Somewhere in the subcontinent, fighting, dropping note and letter from Greece
• Pakistan’s largest city