The leader of Iran’s Revolutionary Guard warned Thursday he ordered his forces to potentially target the U.S. Navy after President Donald Trump’s tweet a day earlier threatening to sink Iranian vessels. Iran separately summoned the Swiss ambassador, who looks out for America’s interests in the country, to complain about Trump’s threat coming amid months of escalating attacks between the two countries. While the coronavirus pandemic temporarily paused those tensions, Iran has since begun pushing back against the Trump administration’s maximum pressure policy both militarily and diplomatically.