求翻译：1998年9月，“美日防卫合作指导方针”的制定，标志着两国军事合作进入一个新阶段。美国还首次提出，在2015年前后俄罗斯和中国可能成为美国的全球性对手。这表明，美国对俄、中两国的判断逐步趋于严峻，对两国的防范和牵制力度明显加大。是什么意思？

September 1998 , " US-Japan Defense Cooperation Guidelines ," formulation , marking the bilateral military cooperation has entered a new phase.

In September 1998, the US-Japan Defense Cooperation Guidelines" in the military cooperation between the two countries to a new stage. The United States also submitted for the first time in 2015 after Russia and China may become the United States' global opponent. This indicates that, the United Stat

1998年9月，“美日防卫合作指导方针”的制定，标志着两国军事合作进入一个新阶段。US also for the first time proposed that, Russia and China possibly becomes US's global match around 2015.This indicated that, US tends to gradually to the Russia, China judgment sternly, to both countries guard and diversion dynamics obvious enlarge.

In September 1998, the "United States-Japan defence cooperation guidelines" developed, marking the military cooperation between the two countries entered a new phase. United States first proposed, both before and after 2015, Russia and China could be the United States's global rivals. This suggests

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