Complex sentence: In the course of the resolution of the Argentinian financial crisis of 2001 Dart attempted the same strategy, however, as a holdout has not yet been paid and initiated legal action in US courts.
Split into simpler sentences: In the course of the resolution of the Argentinian financial crisis of 2001 Dart attempted the same strategy. However, as a holdout he has not yet been paid and has initiated legal action in US courts.