Answer: 1. Tensions between the United States and China: US-China relations have been increasingly strained in recent years, as the two countries have clashed over trade tariffs and other issues. This has had ripple effects throughout the world, leading to economic instability and political uncertainty.
2. US-Iran relations: The US has imposed sanctions on Iran and recently ended the Obama-era nuclear deal, which could lead to further tensions in the region and the wider world.
3. US-North Korea relations: The US has been engaged in a tense standoff with North Korea over its nuclear program, which could lead to further regional instability if the situation escalates further.
4. US election: The upcoming US presidential election could have major implications for global politics and the economy.
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