The Pentagon has abruptly sent the aircraft carrier Nimitz home from the Middle East and Africa over the objections of top military advisers, marking a reversal of a weekslong muscle-flexing strategy aimed at deterring Iran from attacking American troops and diplomats in the Persian Gulf. Officials said on Friday that the acting defense secretary, Christopher C. Miller, had ordered the redeployment of the ship in part as a "de-escalatory" signal to Tehran to avoid stumbling into a crisis in President Trump's waning days in office. American intelligence reports indicate that Iran and its proxies may be preparing a strike as early as this weekend to avenge the death of Maj. Senior Pentagon officials said that Mr. Miller assessed that dispatching the Nimitz now, before the first anniversary this Sunday of General Suleimani's death in an American drone strike in Iraq, could remove what Iranian hard-liners see as a provocation that justifies their threats against American military targets. Some analysts said the return of the Nimitz to its home port of Bremerton, Wash., was a welcome reduction in tensions between the two countries.

ABOARD THE USS NIMITZ -- High above the Persian Gulf, an Iranian drone crosses the path of American fighter jets lining up to land on the USS Nimitz. The drone buzzes across the sky more than a mile above the massive aircraft carrier and is spotted by the fighters. But for the senior Navy commanders on the ship, the presence of the enemy drone so close is worrying. Their biggest fear is the surveillance aircraft will start carrying weapons, posing a more direct threat to U.S. vessels transiting one of the world's most significant strategic and economic international waterways. "It's just a matter of time before we see that," said Navy Rear Adm. Bill Byrne, commander of the carrier strike group that includes the Nimitz.

DUBAI, UNITED ARAB EMIRATES – An unarmed Iranian drone shadowed a U.S. aircraft carrier at night and came close enough to F-18 fighter jets to put the lives of American pilots at risk, the Navy said Tuesday, reporting the second such tense encounter within a week. The Iranian Sadegh drone flew without any warning lights during the encounter Sunday night with the USS Nimitz, said Lt. Ian McConnaughey, a spokesman for the Bahrain-based 5th Fleet. The drone did not respond to repeated calls over the radio and came within 1,000 feet (300 meters) of U.S. fighters, he said. That "created a dangerous situation with the potential for collision and is not in keeping with international maritime customs and laws," McConnaughey said in a statement. The drone was unarmed, the lieutenant said, though that model can carry missiles. Iran's military and state-run media did not immediately report the incident, which came after a similar encounter Aug. 8, in which the Navy said an Iranian drone came within 100 feet (30 meters) of an F-18 preparing to land on the Nimitz.