The office of the president holds significant hard and soft power both in the United States and abroad. Article II of the U.S. Constitution vests the executive power of the United States in the president.
PPP (Point-to-Point Protocol) is a protocol for communication between two computers using a serial interface, typically a personal computer connected by phone line to a server.
PPI stands for 'Payment Protection Insurance'. It's designed to cover your loan or credit card repayments for a year in the event of an accident, sickness or unemployment, or sometimes just accident and sickness. Yet it's been widely mis-sold, and you could even have it without knowing.