Models of political economy provide useful frameworks to understand the interests of countries, how they interact with each other, as well as the geo-economic and geopolitical environment that they are in. These models are often used as a foundation for more complex analysis that characterize the real-world. Considering the three models of political economy, for example, Realism, Liberalism and Marxism, which model best describes Singapore-China relations in the recent ten years. Provide four (4) relevant justifications and clearly explain the choice.