Related video: Putin, Xi and Modi show unity at summit (AP)

President Trump sent his “warmest regards” to the leaders of China, North Korea and Russia as he accused them of conspiring against the United States.

“May President Xi and the wonderful people of China have a great and lasting day of celebration. Please give my warmest regards to Vladimir Putin, and Kim Jong Un, as you conspire against The United States of America,” Trump wrote in a post on his Truth Social platform Tuesday evening.

The facetious jab came as China’s Xi Jinping appeared alongside Russian President Vladimir Putin and North Korean leader Kim Jong Un at his military parade in Beijing celebrating 80 years since “Victory Day,” which commemorates Japan’s surrender at the end of World War II.

The historic moment marked the first time the three leaders appeared in public all together.

Trump said he was hoping to hear in Xi’s remarks an acknowledgement of America’s role in the Second World War victory.

“The big question to be answered is whether or not President Xi of China will mention the massive amount of support and ‘blood’ that The United States of America gave to China in order to help it to secure its FREEDOM from a very unfriendly foreign invader,” Trump said in his post.

“Many Americans died in China’s quest for Victory and Glory. I hope that they are rightfully Honored and Remembered for their Bravery and Sacrifice!” the president continued.

Ahead of the military parade, Xi held talks with Putin on Tuesday, calling the Russian leader his “old friend,” Reuters reported.

In an interview on “The Scott Jennings Show” on Tuesday, the president was asked whether he was concerned “about an axis forming against the United States with China and Russia.”

“I am not concerned at all,” Trump said. “We have the strongest military in the world, by far. They would never use their military on us. Believe me.”