巴黎—在美国总统的一个任期之后评估其外交政策表现是一个挑战，因为每一位美国总统都面临着复杂多变的外交和战略环境以及严峻的国内约束。
PARIS – To evaluate an American president’s foreign-policy performance after one term is challenging, given the complex diplomatic and strategic environment and significant domestic constraints that confront every US president.