Why NATO should pressure low-spending members without expelling them

Should NATO expel members that fail to meet the two-percent defence-spending commitment?

No; they should face strong pressure to meet the commitment, but their membership remains useful to a defensive alliance.

NATO should not expel members that fail to meet the two-percent defence-spending commitment, although much heavier pressure for compliance is warranted. A defensive alliance gains value from keeping members inside its collective framework even when their contributions are inadequate. Removing them would sacrifice that membership while doing nothing by itself to rebuild missing military capacity. The proposed remedy is political pressure and renewed investment rather than shrinking the alliance.