The leader of Yemen's Houthis has warned they will strike US warships if the Iranian-backed militia was targeted by the United States, which this week set up a multinational force to counter Houthi attacks on commercial vessels in the Red Sea.
The Houthi rebels, which control vast amounts of territory in Yemen after years of war, have since last month fired drones and missiles at international vessels sailing through the Red Sea, attacks they say respond to Israel's assault on the Gaza Strip.
Under the internatioanl security initiative, the US and ten other, mostly NATO, countries will patrol the Red Sea to deter and respond to future Houthi attacks that have so far led to major global shipping lines rerouting around Africa instead.
"We will not stand idly by if the Americans are tempted to escalate further and commit foolishness by targeting our country or waging war against it," Abdel-Malek al-Houthi said.
"Any American targeting of our country will be targeted by us, and we will make American battleships, interests and navigation a target for our missiles, drones and military operations," he said in a televised speech.
The crisis in the Red Sea has grown out of the war between Israel and Gaza's ruling Palestinian Islamist group Hamas, the latest conflict in the Middle East to pit the US and its allies against regional power Iran and its Arab militia proxies.
The war began on October 7 when Hamas fighters stormed across the Gaza border into southern Israel, where Israeli authorities say the militants killed about 1200 mostly civilian Israelis and foreigners.
Israel’s retaliatory bombardment and invasion of Gaza, which Israeli officials state is aimed at wiping out Hamas, has killed nearly 20,000 Palestinians, according to health officials in the densely populated enclave.
Iranian proxies including the Houthis and Lebanese Hezbollah have fired rockets at Israel since the conflict began.
The Houthis, meanwhile, have stepped up their Red Sea attacks, threatening to target all ships heading to Israel and warning shipping companies against dealing with Israeli ports.
The attacks have disrupted a key trade route that links Europe and North America with Asia via the Suez Canal and caused container shipping costs to rise sharply as companies seek to ship their goods via alternative, often longer, routes.
In "Operation Prosperity Guardian," the United Kingdom, Bahrain, Canada, Denmark, France, Italy, the Netherlands, Norway, Seychelles and Spain, along with the US will conduct joint patrols in the southern Red Sea and the adjacent Gulf of Aden.
"As long as the Americans want to enter into a direct war with us, they should know that we are not those who fear them, and that they are facing an entire people," al-Houthi said.
He warned the US against sending soldiers to Yemen, saying they would "face something harsher than what they faced in Afghanistan and what they suffered in Vietnam".
