The United States has approved a $100 million support contract with Taiwan aimed at boosting the island’s missile defence systems amid heightened tensions with China. Al Jazeera reports that Taiwan’s defence ministry has said the decision to obtain newer Patriot missiles was made during a 2019 meeting with US officials in the administration of former US president Donald Trump and that the deal was expected to “come into effect” within one month. Like most countries, the US does not have formal relations with Taiwan, but Washington is bound by law to provide the island with the means to defend itself.