1. Swissair pursued an aggressive acquisition strategy in the late 1990s known as the "Hunter Strategy" where it acquired stakes in smaller airlines like Sabena, the national carrier of Belgium.
2. Sabena struggled financially for many years with high costs, debt, and union unrest. It was further burdened after being acquired by Swissair as part of Swissair's expansion strategy.
3. Both Swissair and Sabena ultimately failed as Swissair's strategy led to overexpansion and debt, and it was unable to finance Sabena's restructuring. Sabena declared bankruptcy in 2001, ending 78 years of service as Belgium's national airline.