American political scientist Mark Cooper asserted that Nasser's charisma and his direct relationship with the Egyptian people "rendered intermediaries (organizations and individuals) unnecessary". He opined that Nasser's legacy was a "guarantee of instability" due to Nasser's reliance on personal power and the absence of strong political institutions under his rule. Historian Abd al-Azim Ramadan wrote that Nasser was an irrational and irresponsible leader, blaming his inclination to solitary decision-making for Egypt's losses during the Suez War, among other events. Miles Copeland, Jr. , once described as Nasser's closest Western adviser, said that the barriers between Nasser and the outside world have grown so thick that all but the information that attest to his infallibility, indispensability, and immortality has been filtered out.