The NATO alliance has been struggling to define its role since the demise of the Warsaw Pact.

自华沙条约湮灭，北约同盟就一直在努力定位自己的角色。

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Western Europeans are skeptical of Washington's support for fast-tracking Ukraine and Georgian membership in the NATO alliance.

VOA: standard.2009.03.29

The collapse of the Soviet Union and the breakup of Yugoslavia in the nineteen nineties challenged NATO's traditional position as a defensive alliance.

VOA: special.2009.04.04

This week, Albania and Croatia officially joined NATO -- bringing the alliance to twenty-eight nations.

VOA: special.2009.04.04

The NATO alliance has grown at the summit to include two new members, Albania and Croatia.

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In part it is simply that he wants Europe to pull its weight in the Nato alliance.

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Politically, it will solidify the NATO alliance if all its members can be brought within this defense system.

CENTERFORSECURITYPOLICY: Center For Security Policy