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WASHINGTON — <\/span>President Donald Trump’s war against Iran<\/a> is stretching the limits of U.S. aircraft carriers and leaving the western Pacific without one of the key American warships as China shows more signs of aggression<\/a>. <\/p>\n The USS George Washington<\/a> is departing the Pacific and expected to replace the USS Abraham Lincoln<\/a> in the Middle East amid growing concerns about mental health and supply issues<\/a> aboard the long-deployed carrier. The Lincoln has had its time at sea extended<\/a> from its original May return date to support operations against Iran. <\/p>\n The lack of a U.S. carrier in the Pacific may be short-lived if the Navy deploys another in the next couple of months. But it shows how the open-ended operations with Iran<\/a> are running some American sailors ragged, analysts say, while the Trump administration further retreats from the Asia-Pacific region and focuses on the Western Hemisphere<\/a>.<\/p>\n \u201cThe administration says that the Pacific is supposed to be the most important behind the Western Hemisphere,\u201d said Greg Poling, director of the Southeast Asia Program at the Center for Strategic and International Studies. Instead, the U.S. is “doing the exact opposite” of its previously expressed goal of pulling out of the Middle East.<\/p>\n American allies in the Pacific are unsettled over the unpredictability of the Republican administration<\/a>, Poling said, while Beijing \u201cis quite happy with U.S. distraction, with the frustration of U.S. allies and partners.”<\/p>\n Beijing sees the U.S. military presence in the region as a threat to China\u2019s rise and an obstacle to its ambition to seize Taiwan<\/a>, the self-governing island it claims as its own. But the United States has argued that the Pacific region is too important economically to lose<\/a>.<\/p>\n No one expects China to invade Taiwan because an American aircraft carrier has left the region. But the carrier’s absence gives the Chinese another opportunity to show its strength, said Bryan Clark, a former Navy submariner who is a defense analyst at the Hudson Institute.<\/p>\n \u201cThey\u2019re using this as part of the narrative to demonstrate to the Philippines, to Japan, to Indonesia and others that the U.S. is not the big dog in the western Pacific anymore,\u201d Clark said. \u201cThey would just prefer that countries in the region decide that China is the bigger power and the U.S. is not able to guarantee their security anymore.\u201d <\/p>\n China conducted naval exercises this week with Indonesia and recently has shown signs of aggression toward Japan and the Philippines, two key U.S. allies that also have territorial disputes with Beijing.<\/p>\n China carried out military drills<\/a> this month near the Scarborough Shoal in the South China Sea. Both China and the Philippines have claims over the shoal. Last month, a Chinese guided-missile destroyer conducted a live-fire exercise<\/a> off Japan\u2019s southernmost island of Okinotori.<\/p>\n Adm. Frank Bradley, head of the U.S. Special Operations Command, has been trying to reassure regional allies<\/a> of Washington\u2019s commitment. He was in Manila on Thursday, telling his Filipino counterparts that U.S. special operations forces are ready to step up joint exercises to strengthen the countries’ alliance. He also is expected to travel to Japan.<\/p>\n Evan Sankey, a policy analyst at the Cato Institute who focuses on U.S. policy toward China, said aircraft carriers provide psychological assurance to U.S. allies. The absence of carriers in the region, he said, \u201cadds to the general sense that the U.S. is distracted by events in the Middle East.\u201d <\/p>\n Trump has relied heavily on aircraft carriers to support military operations during his second term. For example, the USS Gerald R. Ford returned home in mid-May after an 11-month deployment<\/a>, the longest since the Vietnam War, during which it supported the U.S. fight against Iran and the capture<\/a> of Venezuela’s then-leader, Nicol\u00e1s Maduro.<\/p>\n The Ford had experienced a fire in a laundry space that forced the carrier to turn around and return to the Mediterranean Sea for repairs and left hundreds of sailors without places to sleep. Meanwhile, the Lincoln has spent a record uninterrupted time at sea of more than 240 days. Democratic lawmakers have been calling for investigations and greater visibility into conditions aboard the ship.<\/p>\n Warships and their crews can only handle so much, said Robert Farley, who teaches national security and diplomacy at the University of Kentucky and often writes about aircraft carriers. <\/p>\n \u201cPeople don\u2019t get enough rest. It’s psychologically exhausting. And R&R is part of keeping the crew healthy,\u201d Farley said. \u201cSometimes it\u2019s framed as, \u2018These people haven\u2019t had a vacation.\u2019 But we are dealing with well-known limits on the capacity of a crew to operate at top efficiency over time. And that just declines.”<\/p>\n Clark, of the Hudson Institute, said the squeeze on the nation’s aircraft carriers stems from the lack of preparation and planning for the Iran war. <\/p>\n \u201cIf we were going to mobilize to do this kind of conflict, and we anticipated it might go this long, we might have done some changes to the carrier schedule to make sure more would be available,\u201d Clark said.<\/p>\n Clark said the Navy has 11 aircraft carriers and typically deploys two or three at a time. But it could soon deploy four if the USS Theodore Roosevelt leaves San Diego for the Middle East, allowing the Washington to return to Pacific. <\/p>\n But the massive warships will need maintenance, likely causing a bottleneck at the nation’s only two carrier shipyards. <\/p>\n \u201cWe\u2019ll end up with a maintenance debt that needs to be paid for the next few years,\u201d Clark said. \u201cWe\u2019ll probably have less carrier presence than we\u2019ve had in the previous years because carriers will be lined up to get into the shipyard.\u201d <\/p>\n Michael Swaine, a senior research fellow in the Quincy Institute\u2019s East Asia Program, questions the future need for aircraft carriers as warfare rapidly changes.<\/p>\n Carriers can be more easily targeted with drones and missiles, particularly by an adversary such as China, Swaine said, while smaller ships and submarines can be as effective in striking targets as the fighter jets that launch off a carrier. <\/p>\n Top Navy officials have indicated a desire to move away from a heavy reliance on carriers. Adm. Daryl Caudle, chief of naval operations, told The Associated Press in February that he wants to convince commanders to use smaller, newer ships<\/a> and other assets instead of consistently turning to huge aircraft carriers. <\/p>\n<\/div>\n