For years, President Donald Trump has voiced sharp criticism of NATO, including a slew of statements since the beginning of the Iran war. In two recent interviews, he has said he would consider taking the significant step of withdrawing the United States from the alliance altogether.

By John Irish and Steve Holland PARIS/WASHINGTON, April 1 (Reuters) - Tensions between the United States and NATO allies flared up as President Donald Trump said he was considering pulling the U.S. out of the military alliance due to its European members' refusing to send ships to unblock the Strait of Hormuz.

President Trump says he's considering withdrawing the U.S. from NATO, following years of complaining about the alliance.

Five recent moves would likely please the Russian President, Polish Prime Minister Donald Tusk said.

U.S. President Donald Trump says he’s strongly considering pulling the United States out of NATO. Trump remarks have ratcheted up his criticism of European allies and exposed a wider rift in the trans-Atlantic alliance.

Trump's meandering speech did little to assuage U.S. allies and world markets concerned about the conflict's ongoing disruptions to the global oil supply.

NATO member states must step up and demonstrate their value to the US after President Donald Trump threatened to leave the bloc amid frustrations over the war against Iran, Washington’s top envoy to the alliance said.

Speaking of Mr. Trump’s verbal attacks on the alliance, the French leader said: “If you create doubt every day about your commitment, you hollow it out.”