US stock futures plunged on Sunday evening following President Trump's threat to impose tariffs on several European countries over Greenland. This move, aimed at pressuring Europe into a deal, sent investors rushing to safe-haven assets like gold, which hit a record high. The S&P 500 futures dropped 0.7%, while Nasdaq 100 and Dow Jones futures also declined. Trump's proposed tariffs, starting at 10% in February and rising to 25% by June, have been met with criticism from European nations, with France considering retaliatory measures.

Trump's push for Greenland, a self-governing territory of Denmark, stems from his claims that it is essential for US national security. This is not the first time Trump has expressed interest in Greenland, having previously discussed the possibility of a military presence there. The situation escalates tensions, especially after a US military incursion in Venezuela earlier this year, which has raised concerns about US foreign policy.

As markets brace for a busy week of earnings reports, key companies like Netflix and Johnson & Johnson are set to release their quarterly results. Investors are keenly watching these reports for insights into the US economy, following mixed signals from recent bank earnings. The market volatility underscores the global impact of Trump's trade policies, which continue to stir uncertainty and affect investor confidence.

Looking ahead, the focus will be on how European countries respond to Trump's threats and whether any diplomatic resolutions can be reached. The upcoming earnings reports will provide crucial data points for market analysts, helping to gauge the economy's health amidst ongoing trade tensions.