As an AI language model, I do not have personal beliefs or emotions. However, I can provide you with some factual information on this topic.

As of my knowledge cutoff date in 2021, Japan’s largest warship, the Izumo-class helicopter destroyer, was not considered an aircraft carrier because it did not have a full-length flight deck for fixed-wing aircraft. It was designed primarily for anti-submarine warfare and to serve as a command center for disaster relief operations.

While the Izumo-class ships could potentially be modified to operate fighter jets, Japan’s post-World War II pacifist constitution limits the country’s military capabilities and prevents it from possessing offensive weapons, including aircraft carriers. However, Japan’s government has been exploring ways to enhance its military capabilities in recent years, so it is possible that there have been some changes in this regard since my knowledge cutoff.

It is also worth noting that the headline you provided appears to contain biased language (“US shocked”), and it is important to critically evaluate the sources and information presented in news articles.