North Korea said on Sunday it was ready to sink a US aircraft carrier to demonstrate its military might. US President Donald Trump ordered the USS Carl Vinson carrier strike group to sail to waters off the Korean peninsula in response to rising tension over the North's nuclear and missile tests, and its threats to attack the United States and its Asian allies. North Korea remained defiant. "Our revolutionary forces are combat-ready to sink a US nuclear powered aircraft carrier with a single strike," the Rodong Sinmun, the newspaper of the North's ruling Workers' Party, said in a commentary. The paper likened the aircraft carrier to a "gross animal" and said a strike on it would be "an actual example to show our military's force." The commentary was carried on page three of the newspaper, after a two-page feature about leader Kim Jong Un inspecting a pig farm. North Korea will mark the 85th anniversary of the foundation of its Korean People's Army on Tuesday. It has in the past marked important anniversaries with tests of its weapons. North Korea has conducted five nuclear tests, two of them last year, and is working to develop nuclear-tipped missiles that can reach the United States. It has also carried out a series of ballistic missile tests in defiance of United Nations sanctions. North Korea's growing nuclear and missile threat is perhaps the most serious security challenge confronting Trump. He has vowed to prevent the North from being able to hit the United States with a nuclear missile and has said all options are on the table, including a military strike. North Korea says its nuclear program is for self-defense and has warned the United States of a nuclear attack in response to any aggression. It has also threatened to lay waste to South Korea and Japan. Japan's show of naval force reflects growing concern that North Korea could strike it with nuclear or chemical warheads. Some Japanese ruling party lawmakers are urging Prime Minister Shinzo Abe to acquire strike weapons that could hit North Korean missile forces before any imminent attack. Japan's navy, which is mostly a destroyer fleet, is the second largest in Asia after China's. — Reuters