World War III is a hypothetical future global war, which is often imagined as a nuclear war that could potentially result in the annihilation of the human race. Many theorise that World War III would pit countries from the West and East against each other. In recent years, growing tension between the United States and the United Kingdom on one side – and Russia and Chinaon the other – have fuelled fears of large-scale international conflict. There are also renewed tensions in the Middle East, with Israel vowing revenge for Hamas terror attacks that many claim have been backed by Iran.